The way it has been adapted in the movie shows aslan diving onto the white witch with her flat on the ground. They dont actually show what happens, but it's assumed that he bites her or mauls her - considering he's a lion.
If you are talking about Chronicles of Narnia the Lion the Witch and the Wardrobe then: He sacrifices himself to save Edmond( he lets the witch kill him) but is later brought back to life. He then take Susan and Lucy to the White Witch's castle and awakens the characters who had been turned to stone. With these reinforcements they go to the battle (where Edmond and Peter are) and he defeats the White Witch. He leaves as the four siblings are crowned.
Aslan is the lion, who resembles Jesus in the cronicles of narnia.
aslan does save edmund. aslan sacrifices himself but then comes back to life
Azlan Aslan
Aslan brought the stone statues to life by breathing upon the stone.
In "The Lion, the Witch, and the Wardrobe," the main crisis is resolved when Aslan sacrifices himself in Edmund's place to the White Witch. Aslan's sacrifice breaks the Witch's power and leads to his resurrection, assisting the children in defeating the Witch and restoring peace to Narnia.
The right by deep magic that Aslan agreed the White Witch possessed was the right to kill Edmund in order to claim him as a traitor, as stated in the laws of the Emperor-beyond-the-Sea.
they meet up and go to the battlefield to defeat the white witch
The White Witch is fighting Aslan when Lucy and Susan arrive. She is trying to prevent Aslan from reclaiming his rightful place as the true ruler of Narnia.
Aslan could breathe life, make people feel braver and stronger, and could heal. The witch would freeze people, manipulate them, and would do them harm. The witch left the land under ice and snow. Aslan made it green and grow.
aslan had an agreement with the witch
He breathes on them, which melts the White Witch's curse
Aslan, Susan, and Lucy lead an army to battle against the White Witch at the Battle of Beruna. Aslan ultimately defeats the White Witch and restores peace to Narnia. Afterward, they are crowned as kings and queens of Narnia.
The witch was going to kill Edmund, but Aslan took his place on the stone table.
In "The Lion, the Witch and the Wardrobe," Aslan sacrifices himself to the White Witch in exchange for Edmund's life, demonstrating his deep love and mercy. Aslan's sacrifice ultimately leads to Edmund's redemption and defeat of the White Witch, emphasizing themes of forgiveness and redemption.
In "The Lion, the Witch, and the Wardrobe" by C.S. Lewis, the White Witch dies when Aslan sacrifices himself to save Edmund. Aslan is resurrected and ultimately defeats the Witch, bringing an end to her reign of tyranny.
I think it is when Aslan, who represents the good, defeated the White Witch in the battle. The battle was between Aslan and the cruel witch to finally bring peace to all in Narnia.