يَا أَيُّهَا الَّذِينَ آمَنُوا اذْكُرُوا نِعْمَةَ اللَّهِ عَلَيْكُمْ إِذْ جَاءَتْكُمْ جُنُودٌ فَأَرْسَلْنَا عَلَيْهِمْ رِيحًا وَجُنُودًا لَّمْ تَرَوْهَا ۚ وَكَانَ اللَّهُ بِمَا تَعْمَلُونَ بَصِيرًا ﴿٩﴾ إِذْ جَاءُوكُم مِّن فَوْقِكُمْ وَمِنْ أَسْفَلَ مِنكُمْ وَإِذْ زَاغَتِ الْأَبْصَارُ وَبَلَغَتِ الْقُلُوبُ الْحَنَاجِرَ وَتَظُنُّونَ بِاللَّهِ الظُّنُونَا ﴿١٠﴾ هُنَالِكَ ابْتُلِيَ الْمُؤْمِنُونَ وَزُلْزِلُوا زِلْزَالًا شَدِيدًا ﴿١١﴾

Am hasibtum an tadkhulul-Jannata wa lammaa ya'tikum-mathalul-lazeena khalaw min qablikum massathumul-ba'saaa'u wad-darraaa'u wa zulziloo hattaa yaqoolar-Rasoolu wallazeena aamanoo ma'ahoo mataa nasrullaah; alaaa inna nasrallaahi qareeb.

(9) O you who have believed, remember the favor of Allah upon you when armies came to [attack] you and We sent upon them a wind and armies [of angels] you did not see. And ever is Allah, of what you do, Seeing. (10) [Remember] when they came at you from above you and from below you, and when eyes shifted [in fear], and hearts reached the throats and you assumed about Allah [various] assumptions. (11) There the believers were tested and shaken with a severe shaking.

Reference: [1] Surah Al-Ahzab 33: 9-11 [2] Jadul Ma'ad: 3/274