“Read! In the Name of your Lord, Who has created (all that exists)” is a command to recite from memory, not from a written page
Question

                Just Few days ago a non muslim asked me a question about first meeting of Prophet Muhammad with angel Jabraeel . Why Angel Said to Prophet Muhammad (PBUH) IQRA (Read) instead of say as i am saying IQRA beacuse the angel did not show any book or literature to the prophet (PBUH) for read.

I am Very Confused his question is confusing me kindly reply me as soon as possible i hope you will get what i said sorry for my poor English skills.
Praise be to Allah.
    It is clear from questions such 
    as this one that the reason for asking it is a lack of knowledge of the 
    Arabic language in which the Qur’an was revealed, and not being aware of the 
    ways in which the Arabs use the words and phrases that appear in it. There 
    is no real problem in this question; rather it seems that the answer will be 
    easy for the questioner if he understands the meaning of the word “Iqra’ 
    ” in Arabic. 

    This word is used to mean two 
    things: 

    1.Reading 
    from a written text. 

    This is the meaning that people 
    may think of in the first instance, as in the verse in which Allah, may He 
    be exalted, says (interpretation of the meaning): “(It will be said to 
    him): "Read your book. You yourself are sufficient as a reckoner against you 
    this Day’” [al-Isra’ 
    17:14]. 

    2.
    Recitation from memory (i.e., something that one has learned by heart).
    

    This refers to recitation only, 
    without looking at anything written. Examples of that include the passage in 
    which Allah says (interpretation of the meaning):

    “It is for Us to collect it and 
    to give you (O Muhammad) the ability to recite it (the Qu’ran),

    And when We have recited it to 
    you (O Muhammad, through Jibrael (Gabriel)), then follow its (the Quran’s) 
    recital.”

    [al-Qiyaamah 75:17,18].

    It is well known that Jibreel 
    (peace be upon him) used to recite the Qur’an to the Prophet Muhammad 
    (blessings and peace of Allah be upon him), not from a book. 

    Further examples can be seen in 
    the verses in which Allah says (interpretation of the meaning): 

    “So when you want to recite the 
    Quran, seek refuge with Allah from Shaitan (Satan), the outcast (the cursed 
    one)”

    [an-Nahl 16:98]

    “And when you (Muhammad SAW) 
    recite the Quran, We put between you and those who believe not in the 
    Hereafter, an invisible veil (or screen their hearts, so they hear or 
    understand it not)”

    [al-Isra’ 17:45]

    “And (it is) a Quran which We 
    have divided (into parts), in order that you might recite it to men at 
    intervals. And We have revealed it by stages. (in 23 years)”

    [al-Isra’ 17:106]. 

    All of these verses describe the 
    Prophet’s recitation of the holy book as qiraa’ah (lit. reading), 
    even though he (blessings and peace of Allah be upon him) was unlettered and 
    could not read from books; rather he recited from his memory that which 
    Allah had enabled him to learn by heart. 

    This is how we should understand 
    the passage in which Allah, may He be glorified and exalted, says 
    (interpretation of the meaning):

    “Read! In the Name of your Lord, 
    Who has created (all that exists),

    Has created man from a clot (a 
    piece of thick coagulated blood).

    Read! And your Lord is the Most 
    Generous”

    [al-‘Alaq 96:1-3].

    We should understand it as 
    meaning that he was commanded to recite from memory, and to recite the words 
    that Jibreel (peace be upon him) would teach him. The Prophet (blessings and 
    peace of Allah be upon him) responded by saying, “I am not a reader,” i.e., 
    I do not know how to read from a book, so how can I read something that I 
    have not memorized and that I do not know? 

    Shaykh ‘Atiyyah Saalim (may 
    Allah have mercy on him) said: 

    Qiraa’ah (reading or reciting) means making manifest and causing to stand out, 
    as it may be said concerning a she-camel, lam taqra’ janeenan (she did not 
    bring forth any young), i.e., she did not produce any offspring. We 
    previously referred to the Shaykh’s explanation of the linguistic meaning. 
    There is no contradiction in the fact that the command to read or recite was 
    addressed to an unlettered Prophet, because reading or reciting may be from 
    a written text or it may be something recited from memory. In this case it 
    was something to be recited from memory that which Jibreel (peace be upon 
    him) recited to him. This further highlights the miracle, because the one 
    who was unlettered yesterday became a teacher today. The context indicates 
    both meanings of qiraa’ah as it mentions reading or reciting along with 
    teaching by the pen (v. 4)

    End quote from Tatimmah Adwa’ 
    al-Bayaan fi Eedaah al-Qur’an bi’l-Qur’an, 9/13 

    Al-‘Allaamah Taahir ibn ‘Ashoor 
    (may Allah have mercy on him) says: 

    The word “Iqra’ (read or 
    recite)” is a command to read or recite. This word refers to speaking 
    particular words that are either written or memorized by heart. 

    The command to read or recite 
    may be an instruction to do so immediately or in the future. What is being 
    requested in the word “Iqra’” is to read or recite immediately or in 
    the near future (near in relation to the point in time at which this command 
    was given), i.e., to say that which is going to be recited to him. What may 
    indicate that this was an instruction to recite in the near future was the 
    fact that it was not preceded by the dictation of some words to him so that 
    he could memorize them and then be asked to recite them, nor was he given a 
    page and asked to read from it. This is like when a teacher says to his 
    student, “Write”, so he gets ready to write what is going to be dictated to 
    him. 

    In the hadeeth in as-Saheehayn 
    from ‘Aa’ishah (may Allah be pleased with her), she says: … (This went on) 
    until the truth came to him when he was in the cave of Hiraa’. The angel 
    came and said, “Read (or recite)!” He (the Messenger of Allah (peace and 
    blessings of Allah be upon him)) said: “I said: ‘I am not a reader.’ Then he 
    took hold of me and squeezed me until I could not bear it any more, then he 
    released me and said, ‘Read!’ I said, ‘I am not a reader.’ He took hold of 
    me and squeezed me a second time until I could not bear it any more, then he 
    released me and said, ‘Read!’ I said, ‘I am not a reader.’ He took hold of 
    me and squeezed me a third time until I could not bear it any more, then he 
    released me and said: ‘Read! In the Name of your Lord Who has created 
    (all that exists) … He has taught man that which he knew not.’ [al-‘Alaq 
    96:1-5].” 

    This hadeeth was narrated by 
    ‘Aa’ishah from the Messenger of Allah (blessings and peace of Allah be upon 
    him), because she says: He said: “I said: ‘I am not a reader.’” Everything 
    that she mentioned in this report is undoubtedly what she narrated from him. 
    And in this report she said: Then the Messenger of Allah (peace and 
    blessings of Allah be upon him) went back with them, his heart beating 
    wildly, i.e., he went back with the verses that had been dictated to him; in 
    other words, he went back with them still in his memory. This indicates that 
    the Messenger of Allah (blessings and peace of Allah be upon him) had 
    received what had been revealed to him, and he recited it at that time. That 
    is made clearer by what she says in the hadeeth: Then Khadeejah took him to 
    Waraqah ibn Nawfal, and Khadeejah said to him: O son of my uncle, listen to 
    what your nephew says – i.e., listen to the words that have been revealed to 
    him. This indicates when it was said to the Messenger of Allah (blessings 
    and peace of Allah be upon him) after the third squeezing, “Read! In the 
    Name of your Lord”, i.e., the five verses (from the beginning of Soorat 
    al-‘Alaq), he recited them at that moment as Allah had commanded him, and he 
    went back from the cave of Hira’ to his home reciting them. 

    It was in this sense that the 
    angel said to him on the three occasions “Iqra’ (read or recite),” repeating 
    the phrase that had been revealed by Allah, and it was a repetition intended 
    to put him at ease with a recitation that he had not learned before. 

    No object is mentioned for the 
    verb “read” (or “recite”), either because it came in the form of an 
    intransitive verb; or it was because what was to be read or recited was 
    clear from the context, and what was meant was: recite what We are going to 
    send down to you of the Qur’an. 

    End quote from at-Tahreer 
    wa’t-Tanweer, 30/435 

    To sum up, the command to read 
    or recite in this verse, “Read! In the Name of your Lord”, does not 
    refer to reading from a written page; rather it refers to reciting from 
    memory something that he had learned. The Prophet (blessings and peace of 
    Allah be upon him) replied that he was unlettered and had not memorized 
    anything from a book before that. But Jibreel taught him the first verses of 
    Soorat al-‘Alaq so that he could read them, i.e., memorize them and recite 
    them after that. 

    And Allah knows best.