Neither the Jews, nor the Christians, will accept you, unless you follow their religion. Say, “God’s guidance is the true guidance.” If you acquiesce to their wishes, despite the knowledge you have received, you will find no ally or supporter to help you against God.
وَلَن تَرضىٰ عَنكَ اليَهودُ وَلَا النَّصٰرىٰ حَتّىٰ تَتَّبِعَ مِلَّتَهُم قُل إِنَّ هُدَى اللَّهِ هُوَ الهُدىٰ وَلَئِنِ اتَّبَعتَ أَهواءَهُم بَعدَ الَّذى جاءَكَ مِنَ العِلمِ ما لَكَ مِنَ اللَّهِ مِن وَلِىٍّ وَلا نَصيرٍ
wa lan tardaa ‘ankal Yahoodu wa lan Nasaaraa hattaa tattabi’a millatahum; qul inna hudal laahi huwalhudaa; wa la’init taba’ta ahwaaa’ahum ba’dal lazee jaaa’aka minal ‘ilmimaa laka minal laahi minw waliyyinw wa laa naseer