Translation:

10. Behold! they came on you from above you and from below you and behold the eyes became dim and the hearts gaped up to the throats and ye imagined various (vain) thoughts about Allah!

Notes (Tafseer)

3682. The psychology of the combatants is described with matchless vigour in the holy Text. The onrush of the enemy was really tremendous. The Trench round Madinah was between the defenders and the huge attacking force, which had some high ground behind them "above you": when any of them came through the valley or over the Trench, they seemed to come from below. The showers of arrows and stones on both sides must also have seemed to come from the air.