Quran 12:107 from Surah Yusuf on Divine Marvels.
أَفَأَمِنُوٓاْ أَن تَأۡتِيَهُمۡ غَٰشِيَةٞ مِّنۡ عَذَابِ ٱللَّهِ أَوۡ تَأۡتِيَهُمُ ٱلسَّاعَةُ بَغۡتَةٗ وَهُمۡ لَا يَشۡعُرُونَ
English translation: Do they then feel secure (against) that comes to them an overwhelming [of] punishment (of) Allah or comes to them the Hour suddenly while they (do) not perceive
Transliteration: afa-aminu an tatiyahum ghashiyatun min adhabi al-lahi aw tatiyahumu al-sa'atu baghtatan wahum la yash'uruna