Surah Al-Ahzab (The Enemy Alliance), Verse 9

یٰۤاَیُّهَا الَّذِیْنَ اٰمَنُوا اذْكُرُوْا نِعْمَةَ اللّٰهِ عَلَیْكُمْ اِذْ جَآءَتْكُمْ جُنُوْدٌ فَاَرْسَلْنَا عَلَیْهِمْ رِیْحًا وَّجُنُوْدًا لَّمْ تَرَوْهَا وَكَانَ اللّٰهُ بِمَا تَعْمَلُوْنَ بَصِیْرًا ۟

Yaaa aiyuhal lazeena aamanuz kuroo ni'matal laahi 'alaikum iz jaaa'atkum junoodun fa arsalnaa 'alaihim reehanw wa junoodal lam tarawhaa; wa kaanal laahu bimaa ta'maloona Baseera

“O ye who believe! Remember the Grace of Allah, (bestowed) on you, when there came down on you hosts (to overwhelm you): But We sent against them a hurricane and forces that ye saw not: but Allah sees (clearly) all that ye do.”

Quran 33:9 (Yusuf Ali Translation)