Battle of Uhud
There was a sign for you in the two armies that met, one fighting in Allah’s cause, the other in disbelief. They saw their opponents as twice their number. But Allah strengthens whomever He wills. Surely, in this is a lesson for those with insight.
3:13There was a token for you in two hosts which met: one army fighting in the way of Allah, and another disbelieving, whom they saw as twice their number, clearly, with their very eyes. Thus Allah strengtheneth with His succour whom He will. Lo! herein verily is a lesson for those who have eyes.