Simurgh Shield is a relic found in Lara Croft: Relic Run. This relic is the 17th relic in Desert Ruins. 32 clues must be found on the 74th level to obtain it. Once obtained, the player is rewarded with 1650 coins.
Description[]
Another brief message from Carter confirming much of what I discovered. He's way ahead of me on the details, though.