Here's a breakdown of the fight:
* The Setting: The final confrontation takes place in the Sorcerer's Stone chamber.
* The Stakes: Voldemort is attempting to steal the Stone, which grants immortality and eternal life. Harry, along with Ron and Hermione, must stop him.
* The Fight: Harry and Voldemort duel, using their wands. The fight ends with Harry disarming Voldemort, who flees. It's important to note that Voldemort's weakened state at the time (being a soul attached to a baby) makes this fight less of a physical duel and more of a mental battle of wills.
The key to the fight is that Harry's love for his parents, a force Voldemort is incapable of comprehending, weakens his power and prevents him from taking the Stone.