As there has been a little confusion with special roles I wanted to clear up a couple things so we are all on the same page.
Jedi Councilor - Has the ability to use the force to determine if one affiliated with the Dark Side or not. (May be used once per night)
Jedi Knight - Protector - Has the ability to protect one person each night and cannot be killed by mundane means. Must have special abilities used or put on trial as a guilty member.
Force Knight - Has the ability to take out one of the Sith during a night phase (usable only once per game)
Padiwans - Normal Jedi's in Training - No special abilities
Sith Lord - Sith leader with the ability to turn one single person to the dark side once per game at anytime during game play.
Sith Apprentice - Has the ability to appear normal to any use of ability by the Jedi Councilor
Bounty Hunter - Has the ability to kill any one person with no way of said person to be protected (Usable Twice per game)
Storm Troopers - Normal Dark Side Allies - No special abilities
These are the roles of the game. As you can see the Force Knight and the Jedi Knight are different roles. I can see how it can get confusing at first, but just think of the Jedi Knight as a Jedi Protector.
As far as the Sith Lord goes.. No one is protected against the Sith Lord. There is no way to protect any person from being turned to the dark side by that role. It is a one time use only power but if used properly can be pretty potent. This means if you are the Jedi Knight and you are turned, the Jedi no longer have that protector and the Sith now have another amongst their ranks. However, now that the Force Knight is dead, the Jedi Knights special ability is useless once being turned. If he had survived he could have used his power to protect his Sith Lord against the Force Knight.
If anyone has any other questions on the special roles please don't hesitate to ask!
Keep in mind also that you -cannot- vote for yourself at anytime during the trial rounds.