It is not permissible for one who is praying behind an imaam to recite anything other than al-Faatihah
Question

                Is it permissible for one who is praying behind the imaam to recite Qur’aan along with the imaam, when the imaam is reciting a lengthy passage?
Praise be to Allah. 
          It is not permissible for one who is praying behind the 
          imaam in a prayer in which Qur’aan is to be recited aloud to recite 
          anything in addition to al-Faatihah. Rather after that he has to listen 
          to the imaam’s recitation (i.e., after reciting al-Faatihah), because 
          the Prophet 
          
          (peace and blessings of Allaah be upon him) said: “Perhaps you recite 
          behind your imaam?” They said, “Yes,” He said, “Do not do that, except 
          for the Opening of the Book (al-Faatihah), for there is no prayer for 
          the one who does not recite it.” And because Allaah says (interpretation 
          of the meaning): 
 
          “So, when the Qur’aan is recited, listen to it, and 
          be silent that you may receive mercy”[al-A’raaf 7:204]
 And 
          the Prophet 
          
          (peace and blessings of Allaah be upon him) said: “When the imaam recites, 
          then listen attentively.” 
 
          The only exception made to that is with regard to al-Faatihah, 
          because of the hadeeth quoted above and because of the general meaning 
          of the hadeeth, “There is no prayer for the one who does not recite 
          the Opening of the Book.” (Saheeh, agreed upon).