Which two characters rescue Faramir from being burned alive by his father?

Gandalf and Pippin rescue Faramir from being burned alive by his father. Denethor believes that Faramir is dying after the disastrous defence of Osgiliath, so he orders a funeral pyre prepared for both of them in Minas Tirith.

Pippin, who has entered Denethor’s service, discovers what is happening and alerts Gandalf. Gandalf rushes to the pyre and prevents Faramir from being consumed by the flames. Denethor, overwhelmed by grief and despair, sets himself alight and later jumps from the city’s walls.

This episode occurs near the climax of The Return of the King. In Tolkien’s book, Pippin’s warning is essential, while Gandalf physically intervenes to save Faramir. The film adaptation dramatizes the scene with Denethor’s madness, Faramir’s apparent death, and Gandalf’s arrival as the battle for Minas Tirith rages outside.