Stopping opening du’aa’ to listen to the
    imaam’s recitation
Question

                Sometimes when I pray behind the Imam, the
      Imam will start reading the fatihah almost immediately. Should I finish the opening du'a,
      or stop and listen to the Imam's recitation?
Praise be to Allah.What you should do is listen to the imaams
    recitation, because Allaah says (interpretation of the meaning): So, when the
    Quraan is recited, listen to it, and be silent that you may receive mercy. [al-Araaf
    7:204]. 
    And Allaah knows best.