Quran 21:39 from Surah Al-Anbiyaa on Divine Marvels.
لَوۡ يَعۡلَمُ ٱلَّذِينَ كَفَرُواْ حِينَ لَا يَكُفُّونَ عَن وُجُوهِهِمُ ٱلنَّارَ وَلَا عَن ظُهُورِهِمۡ وَلَا هُمۡ يُنصَرُونَ
English translation: If knew those who disbelieved (the) time (when) not they will avert from their faces the Fire and not from their backs and not they will be helped!
Transliteration: law ya'lamu alladhina kafaru hina la yakuffuna an wujuhihimu al-nara wala an zuhurihim wala hum yunsaruna