Quote Originally Posted by ArianeEwah View Post
With level 35 you get Sheltron which blocks all incoming attacks for 4s
If I recall correctly, it's been a while since I leveled PLD, when you first get Sheltron it only blocks the next incoming attack and therefore only defends against a single attack before it goes away. It isn't until you get the Enhanced Sheltron trait at lvl.74 that it changes from defending against a single attack to defending against all attacks for a 6s duration.

To the poster, in addition to what has already been said regarding pacing out small enough groups of enemies and using defensive cooldowns, also don't forget that as a PLD you have multiple stun abilities that can lower incoming damage a bit.
Low Blow is an instant cast ability with a relatively low recast time, so just go ahead and use it when it's available and if things are getting really rough you can always use Shield Bash to stun-lock the enemy group by just cycling between the different enemies and using Bash on them to keep the group locked down for a bit which will give your squadron some time to whittle them down a bit.
Keep in mind, the above strategy is really only something you may want to do at lower levels as a tank, since once you get get higher level you will have more defensive tools available that will make surviving way easier and you as well as your party members will have more AoE damage abilities and so just dishing out as much damage as possible as quickly as possible will start to become more efficient.