Quran 74:46 from Surah Al-Muddaththir on Divine Marvels.
وَكُنَّا نُكَذِّبُ بِيَوۡمِ ٱلدِّينِ
English translation: And we used (to) deny (the) Day (of) the Judgment
Transliteration: wakunna nukadhibu biyawmi al-dini