Which person was the first out of wand when Harry and Voldemort dueled?

The person who was first out of wand when Harry and Voldemort dueled in the final battle of the Harry Potter series was Harry Potter.

He was the one who disarmed Voldemort, causing the curse to rebound on Voldemort and killing him. This is a crucial moment in the story as it marks the end of Voldemort's reign of terror and brings about peace to the wizarding world.