Quran 5:51 from Surah Al-Maaida on Divine Marvels.
۞يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ لَا تَتَّخِذُواْ ٱلۡيَهُودَ وَٱلنَّصَٰرَىٰٓ أَوۡلِيَآءَۘ بَعۡضُهُمۡ أَوۡلِيَآءُ بَعۡضٖۚ وَمَن يَتَوَلَّهُم مِّنكُمۡ فَإِنَّهُۥ مِنۡهُمۡۗ إِنَّ ٱللَّهَ لَا يَهۡدِي ٱلۡقَوۡمَ ٱلظَّٰلِمِينَ
English translation: O you who believe (Do) not take the Jews and the Christians (as) allies Some of them (are) allies (to) others And whoever takes them as allies among you then indeed, he (is) of them Indeed Allah (does) not guide the people the wrongdoing
Transliteration: yaayyuha alladhina amanu la tattakhidhu al-yahuda wal-nasara awliyaa ba'duhum awliyau ba'din waman yatawallahum minkum fa-innahu min'hum inna al-laha la yahdi al-qawma al-zalimina