[Sura 29 ayet 46][1]

**And do not argue with the People of the Scripture except in a way that is best, except for those who commit injustice among them, and say**, "**We believe in that which has been revealed to us and revealed to you. And our God and your God is one; and we are Muslims (in submission) to Him.**"

I think that is one of answers


  [1]: http://quran.com/29