Horrified

And the true promise draws near, then the disbelievers will stare in horror, saying, “Woe to us! We were heedless of this!”

21:97And the True Promise draweth nigh; then behold them, staring wide (in terror), the eyes of those who disbelieve! (They say): Alas for us! We (lived) in forgetfulness of this. Ah, but we were wrong-doers!