Totec's Shield
From WikiRaider
Totec's Shield is a defensive weapon used by Totec in Lara Croft and the Guardian of Light to deflect arrows and fireballs produced by some of the demon opponents. It can also be used to give Lara a leg up: Totec places the shield over his head, Lara jumps on it, and with the right timing Totec and Lara can jump together for Lara to reach for example the top of some columns.
Instead of a shield Lara has her magnetic grapple.