Surah Al-Ankabut (The Spider), Verse 46

وَلَا تُجَادِلُوْۤا اَهْلَ الْكِتٰبِ اِلَّا بِالَّتِیْ هِیَ اَحْسَنُ اِلَّا الَّذِیْنَ ظَلَمُوْا مِنْهُمْ وَقُوْلُوْۤا اٰمَنَّا بِالَّذِیْۤ اُنْزِلَ اِلَیْنَا وَاُنْزِلَ اِلَیْكُمْ وَاِلٰهُنَا وَاِلٰهُكُمْ وَاحِدٌ وَّنَحْنُ لَهٗ مُسْلِمُوْنَ ۟

Wa laa tujaadilooo Ahlal Kitaabi illaa billatee hiya ahsanu illal lazeena zalamoo minhum wa qoolooo aamannaa billazeee unzila ilainaa wa unzila ilaikum wa illaahunna wa ilahukum waahidunw-wa nahnu lahoo muslimoon

“And dispute ye not with the People of the Book, except with means better (than mere disputation), unless it be with those of them who inflict wrong (and injury): but say, "We believe in the revelation which has come down to us and in that which came down to you; Our Allah and your Allah is one; and it is to Him we bow (in Islam)."”

Quran 29:46 (Yusuf Ali Translation)