Quran 33:10 — The Parties (Al-Ahzab)

When they came from above you, and from beneath you, your eyes were terrified, your hearts ran out of patience, and you harbored unbefitting thoughts about GOD.

[33:9] O you who believe, remember GOD's blessing upon you; when soldiers attacked you, we sent upon them violent wind and invisible soldiers. GOD is Seer of everything you do.

[33:11] That is when the believers were truly tested; they were severely shaken up.