The word(s) "horror" appears 2 time(s) in 2 verse(s) in Quran in Saheeh International translation.

(1) And never think that Allah is unaware of what the wrongdoers do. He only delays them for a Day when eyes will stare [in horror].

(2) And [when] the true promise has approached; then suddenly the eyes of those who disbelieved will be staring [in horror, while they say], "O woe to us; we had been unmindful of this; rather, we were wrongdoers."