A Controversial Koranic Message Was Hidden in an X-Men Comic – Slate Magazine (blog)
That verse is difficult to translate precisely into English, and there has been an array of attempts over the years, many of which you can read here. Generally, it says something along the lines of what the Hilali-Khan translation schema maps out as “O you who believe! Take not the Jews and the Christians as awliya (friends, protectors, helpers, etc.), they are but awliya to one another. And if any amongst you takes them as awliya, then surely he is one of them. Verily, Allah guides not those people who are the zalimoon (polytheists, wrongdoers, unjust).” Whatever your interpretation, it’s not very nice to Jews and Christians.