Force protection

Force protection was a Light Side Force power only achieved by high-rank Jedi masters. This would make the bearer invulnerable to a wide range of attacks until it wore off, either through time, or if the user was fatigued. Protection could also wear off quicker than normal, depending on the intensity and number of attacks at once, since the aura itself could only withstand so much. 

Force protection was mainly seen when a Jedi or other saber-wielder focused his force powers into his/her saber to deflect other force powers, such as Mace Windu deflecting then Chancellor Palpatine's force lightning during the final hour of his life, or when Yoda and Obi-Wan Kenobi deflect shots from clonetroopers while trying to reach in to the Jedi Temple on Coruscant, during the execution of Order 66. Most recently, Jacen Solo used this technique amongst the current Queen Mother Tenel Ka's guards when he came to visit her after five years.