Critical: Protect

Critical: Protect, also known as SOS Protect, is a recurring support ability in the series. It automatically grants the Protect status while the user is in Critical HP status.

Final Fantasy VI
SOS Protect is the ability of the Mythril Glove, and will last even after the user has left Critical status.

Final Fantasy X
SOS Protect is an ability that can be either found on armor dropped by enemies, or by customizing onto any armor by using 8x Light Curtain, which adds 4,000 gil to the armor's sell value.

Final Fantasy X-2
SOS Protect is an ability usable only through learning it on the Warrior Dressphere for 20 AP after learning Sentinel, or by using the Helios Guard Garment Grid. The ability and status will last as long as the user's HP is below 33% Max HP.