Surat Al-'Aĥzāb - سورة الأحزاب

يَا أَيُّهَا الَّذِينَ آمَنُوا اذْكُرُوا نِعْمَةَ اللَّهِ عَلَيْكُمْ إِذْ جَاءَتْكُمْ جُنُودٌ فَأَرْسَلْنَا عَلَيْهِمْ رِيحًا وَجُنُودًا لَّمْ تَرَوْهَا ۚ وَكَانَ اللَّهُ بِمَا تَعْمَلُونَ بَصِيرًا

Muhsin Khan: O you who believe! Remember Allah's Favour to you, when there came against you hosts, and We sent against them a wind and forces that you saw not [i.e. troops of angels during the battle of AlAhzab (the Confederates)]. And Allah is Ever AllSeer of what you do.