Al-Mumtahanah - 60:1

بِسْمِ اللهِ الرَّحْمنِ الرَّحِيمِ يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَتَّخِذُوا عَدُوِّي وَعَدُوَّكُمْ أَوْلِيَاء تُلْقُونَ إِلَيْهِم بِالْمَوَدَّةِ وَقَدْ كَفَرُوا بِمَا جَاءكُم مِّنَ الْحَقِّ يُخْرِجُونَ الرَّسُولَ وَإِيَّاكُمْ أَن تُؤْمِنُوا بِاللَّهِ رَبِّكُمْ إِن كُنتُمْ خَرَجْتُمْ جِهَادًا فِي سَبِيلِي وَابْتِغَاء مَرْضَاتِي تُسِرُّونَ إِلَيْهِم بِالْمَوَدَّةِ وَأَنَا أَعْلَمُ بِمَا أَخْفَيْتُمْ وَمَا أَعْلَنتُمْ وَمَن يَفْعَلْهُ مِنكُمْ فَقَدْ ضَلَّ سَوَاء السَّبِيلِ
[60:1]
O you who believe! do not take My enemy and your enemy for friends: would you offer them love while they deny what has come to you of the truth, driving out the Messenger and yourselves because you believe in Allah, your Lord? If you go forth struggling hard in My path and seeking My pleasure, would you manifest love to them? And I know what you conceal and what you manifest; and whoever of you does this, he indeed has gone astray from the straight path.
O ye who believe! Take not my enemies and yours as friends (or protectors),- offering them (your) love, even though they have rejected the Truth that has come to you, and have (on the contrary) driven out the Prophet and yourselves (from your homes), (simply) because ye believe in Allah your Lord! If ye have come out to strive in My Way and to seek My Good Pleasure, (take them not as friends), holding secret converse of love (and friendship) with them: for I know full well all that ye conceal and all that ye reveal. And any of you that does this has strayed from the Straight Path.
O ye who believe! Choose not My enemy and your enemy for allies. Do ye give them friendship when they disbelieve in that truth which hath come unto you, driving out the messenger and you because ye believe in Allah, your Lord? If ye have come forth to strive in My way and seeking My good pleasure, (show them not friendship). Do ye show friendship unto them in secret, when I am Best Aware of what ye hide and what ye proclaim? And whosoever doeth it among you, he verily hath strayed from the right way.