The word(s) "christians" appears 13 time(s) in 12 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) The Jews call 'Uzair a son of Allah, and the christians call Christ the son of Allah. That is a saying from their mouth; (in this) they but imitate what the unbelievers of old used to say. Allah's curse be on them: how they are deluded away from the Truth!

(12) Those who believe (in the Qur'an), those who follow the Jewish (scriptures), and the Sabians, christians, Magians, and Polytheists,- Allah will judge between them on the Day of Judgment: for Allah is witness of all things.