What part of the book did Atticus save miss Maudie rocking chair from fire?

Atticus didn't save Miss Maudie's rocking chair from the fire. It was Scout who found it, still intact amidst the ashes of Miss Maudie's burning house.

The fire is an important event in To Kill a Mockingbird because it highlights Miss Maudie's resilient spirit, foreshadows the fire of prejudice that will engulf the town, and provides a key moment for Scout's development.