What is do not cite the deep magic to me witch?

"Do not cite the Deep Magic to me, Witch" is a line spoken by the character Aslan in the book "The Lion, the Witch, and the Wardrobe" by C.S. Lewis. It is part of a conversation between Aslan and the White Witch, who demands that Aslan hands over one of the Pevensie children to be sacrificed in accordance with the Deep Magic. Aslan responds with this line, implying that he has authority over and a greater understanding of the Deep Magic. The phrase has since become a popular quote and meme, often used to dismiss someone who is trying to assert their authority over another.