Quran 26:202 from Surah Ash-Shu'araa on Divine Marvels.
فَيَأۡتِيَهُم بَغۡتَةٗ وَهُمۡ لَا يَشۡعُرُونَ
English translation: And it will come to them suddenly while they (do) not perceive
Transliteration: fayatiyahum baghtatan wahum la yash'uruna