Sentinel (ability)

Sentinel is a defensive ability found in various games.

Final Fantasy X
Sentinel is found in Auron's section of the Sphere Grid. It is an improved version of Cover, where the user takes physical damage in place of their teammates.

Final Fantasy X-2
Available on the Warrior Dressphere, the user remains immobile until their ATB bar refills and all physical attacks cause only 1HP damage.

Final Fantasy XI
Sentinel is available to Paladins. The ability becomes available at 30. The ability is usable once every 5 minutes and will last a total of 30 seconds after activated. During this time, the Paladin will gain +15% defense to his base score, making him significantly more resilient to damage.

Sentinel also creates an amount of enmity that is comparable to provoke, the warrior job ability. While this is true, Paladins would rarely if ever exclusively use an ability like Sentinel to generate hate, even though they are a tank. They would still rely upon their subjob, warrior, for enmity generating abilities.