http://www.youtube.com/watch?v=nXw5s7ZsLt0
A tips and tricks video on how to beat Deception Assassins as a Deception Assassin. In the video I duel Jerk who is the best Assassin on our server, he has full Battlemaster gear and is nearly valor rank 80.
If you aren't familiar with Assassin abilities I would recommend using TORhead.com to look up what they are, you have equivalents as a Jedi Shadow.
I would describe everything in text below but that would be pretty impossible to understand.