Defend the Templars in AC4 Black Flag

"Defend the Templars" is the second mission objective in Sequence 2 / Memory 04: A Man They Call The Sage

Walkthrough

Focus first on the assassins attacking Laureano Torres, since if he dies you will be Desynchronized

Also, you should shoot at least one of the enemies with your pistol, to complete the optional objective

Next Objective

Catch the Sage