This post will give you a build for the Jedi Knight Guardian that is focused on PVP and uses the Vigilance tree. This build comes courtesy of http://www.swtorsavior.com which is the best SWTOR leveling guide and general strategy guide so it is well worth a look if you are looking for some help leveling faster.
We will post the video that tells you how to allocate the points and then we will give you some rotations and information on how to use the build.
The Guardian in PVP can be one of the most frightening classes to deal with. Uniting a high amount of survivability, average damage output, and plenty of utility, the Guardian is a very versatile PVP class.
Due to your versatility, you can focus on either being defensive (defending objectives, healers, or carriers) with your great CC and survivability, or focus on being offensive (killing enemy healers or carriers, capturing points) with your damage output and CC. Use your flexibility to adapt to what your team is lacking or needs support in.
Make sure to use Combat Focus on cooldown to help with your Focus generation.
Saber Ward - your go-to survivability skill. Great for carrying the ball, defending a point, and generally not dying.
Enure - a good skill if you need just a few more seconds of life to get that heal or kill.