Ali 'Imran 3:20

فَإِنۡ حَآجُّوكَ فَقُلۡ أَسۡلَمۡتُ وَجۡهِيَ لِلَّهِ وَمَنِ ٱتَّبَعَنِۗ وَقُل لِّلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ وَٱلۡأُمِّيِّـۧنَ ءَأَسۡلَمۡتُمۡۚ فَإِنۡ أَسۡلَمُواْ فَقَدِ ٱهۡتَدَواْۖ وَّإِن تَوَلَّوۡاْ فَإِنَّمَا عَلَيۡكَ ٱلۡبَلَٰغُۗ وَٱللَّهُ بَصِيرُۢ بِٱلۡعِبَادِ 20

So if they argue with you, say, "I have submitted myself to Allah [in Islam], and [so have] those who follow me." And say to those who were given the Scripture and [to] the unlearned, "Have you submitted yourselves?" And if they submit [in Islam], they are rightly guided; but if they turn away - then upon you is only the [duty of] notification. And Allah is Seeing of [His] servants