21:39
لَوْ يَعْلَمُ ٱلَّذِينَ كَفَرُوا۟ حِينَ لَا يَكُفُّونَ عَن وُجُوهِهِمُ ٱلنَّارَ وَلَا عَن ظُهُورِهِمْ وَلَا هُمْ يُنصَرُونَ
law yaʿlamu alladhīna kafarū ḥīna lā yakuffūna ʿan wujūhihimu l-nāra walā ʿan ẓuhūrihim walā hum yunṣarūna
If the disbelievers only knew, the time will arrive when they will not be able to ward off the Fire from their faces or their backs, and they will get no help.
If only those who disbelieved knew (the time) when they will not be able to ward off the Fire from their faces, nor from their backs, and they will not be helped.