He is asking about a du’aa’ to bless his business
Question

                I just wanted to know,if you could tell me a prayer that i can say in arabic for my business to succeed. Please pray for me.
Praise be to Allah.There is nothing in the 
    Sunnah to indicate that it is mustahabb to say a particular dhikr or du’aa’ 
    for help in business or earning a living, except that which was narrated 
    from Umm Salamah, that the Prophet  (peace and blessings of Allaah be 
    upon him) used to say after Fajr prayer: “Allaahumma inni as’aluka rizqan 
    tayyiban, wa ‘ilman naafi’an, wa ‘amalan mutaqabbalan (O Allaah, I ask 
    you for good (halaal) provision, beneficial knowledge and accepted good 
    deeds).” 
Narrated by Ahmad in 
    al-Musnad (6/294_ and Ibn Majaah in al-Sunan (66). 
Al-Haythani said in 
    Majma’ al-Zawaa’id (10/146): Its men are thiqaat (trustworthy). End 
    quote. And it was classed as hasan by al-Haafiz ibn Hajar as it says in 
    al-Futoohaat al-Rabbaaniyyah (3/70). It was classed as saheeh by 
    al-Albaani in Saheeh Ibn Majaah. 
As you can see, it is a 
    du’aa’ that is general in meaning and includes earnings from business as 
    well as from farming, employment or manufacturing. This is how the Sunnah is 
    in du’aa’s that are concise in wording and comprehensive in meaning. 
But it is mustahabb for you 
    to ask Allaah for what you need by name, using whatever simple words and 
    phrases Allaah enables you to say. So you may say for example: O Allaah, 
    help me in my business, or O Allaah, bless me in my business, or O Allaah, 
    make me independent of means so that I have no need of that which is haraam, 
    or decree for me therein that which is good and makes me independent of 
    means… and so on. 
More important than the 
    wording of the du’aa’ is sincerity in du’aa’, focusing properly and turning 
    to Allaah fully, for Allaah does not look at the eloquence of the words, 
    rather He looks at what is in the heart of sincerity, humility and longing 
    for His mercy. From this you may know that saying du’aa’ in languages other 
    than Arabic is also permissible, if the du’aa’ is general in meaning and was 
    not narrated in specific words in the Qur’aan or Sunnah. 
You should also note that 
    fearing Allaah (taqwa) is a means to attain all success, and that the 
    business by means of which a person seeks to attain the pleasure of Allaah 
    and in which he pays heed to His command and prohibitions, is a business 
    that will be blessed and helped, if Allaah wills, and that haraam things 
    erase all blessings, as Allaah says (interpretation of the meaning): 
“Allaah will destroy 
    Riba and will give increase for Sadaqaat (deeds of charity, alms). And 
    Allaah likes not the disbelievers, sinners”
[al-Baqarah 2:276]
And the Prophet  (peace 
    and blessings of Allaah be upon him) said: “Even if riba increases a thing, 
    its consequences lead to loss.” 
Narrated by Ahmad (1/395); 
    classed as hasan by Ibn Hajar in Fath al-Baari (4/369); classed as 
    saheeh by al-Albaani in Saheeh al-Jaami’ (3542). 
Yahya ibn Mu’aadh al-Raazi 
    (258 AH) – who was one of the best of the salaf –said: 
Obedience will be stored in 
    the stores of Allaah, and the key (to obedience) is du’aa’, and it becomes 
    effective by means of halaal earnings. 
Imam al-Ghazali (may Allaah 
    have mercy on him) said, when discussing what should be paid attention to 
    when doing business, in Ihya’ ‘Uloom al-Deen (2/103): 
It us essential to have a 
    good intention and sound belief when starting out in business, so a man 
    should intend to make himself independent of means so that has no need of 
    what is haraam and he does not need to ask of people or seek what they have, 
    as halaal income makes him independent of others and help him to carry out 
    his religious duties and sponsor his children, so that he will become like 
    those who strive for the sake of Allaah. He should be sincere with the 
    Muslims and love for all people what he loves for himself, and he should 
    intend to follow the path of justice and good conduct in his dealings, and 
    intend to enjoin what is good and forbid what is evil in everything that he 
    sees in the marketplace. If he has all these sound beliefs and intentions in 
    his heart, he will be striving in the path of the Hereafter. And if he earns 
    money then this is something extra, and if he loses in this world he will 
    prosper in the Hereafter. End quote. 
And Allaah knows best.