Any duas for after a tough exam?

Assalamu alaikum, everyone. I had an exam today that I prepared for all summer, but the questions I focused on didn't appear. I answered 2 out of 4, but one answer was really short because I wasn't sure, and the other I wrote a lot but forgot some points. I'm worried I might have failed, even though I've put my trust in Allah SWT. Does anyone know a dua or dhikr I can recite?