Do not take the Jews and the Christians as allies.
Allah commanded us not to take allies from the Jews and the Christians even if they are powerful and victorious.
Allah said ( interpretation of the meaning ) : { 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. So you see those in whose hearts is disease [i.e., hypocrisy] hastening into [association with] them, saying, "We are afraid a misfortune may strike us." But perhaps Allah will bring conquest or a decision from Him, and they will become, over what they have been concealing within themselves, regretful. } Quran ( 5 : 52 )