What is the duaa that makes Satan cry?

The duaa that is said to make Satan cry is the one in which a person sincerely seeks forgiveness and mercy from Allah. Specifically, when a believer acknowledges their sins and turns to Allah with a genuine heart, asking for forgiveness, it is believed that this humility and repentance deeply distress Satan. The essence of this duaa lies in the recognition of human fallibility and the boundless mercy of Allah.