Translation of the verse 51 from Surah Al-Ma’idah : Number of verses 120 - - page 117 - Part 6.
O you who believe! Take not the Jews and the Christians as Auliya' (friends, protectors, helpers, etc.), they are but Auliya' to one another. And if any amongst you takes them as Auliya', then surely he is one of them. Verily, Allah guides not those people who are the Zalimun (polytheists and wrong-doers and unjust).
O you who have believed, do not take the Jews and the Christians as allies. They are [in fact] allies of one another. And whoever is an ally to them among you - then indeed, he is [one] of them. Indeed, Allah guides not the wrongdoing people.
(5:51) Believers! Do not take the Jews and the Christians for your allies. They are the allies of each other. And among you he who takes them for allies, shall be regarded as one of them. Allah does not guide the wrong-doers.