Star Wars: Rogues of the Old Republic (ROTOR)
Bell of Brakin
This hand-held bell, in the hands of a force-user, is a powerful defensive tool.
As an action, a force active character can ring the bell (and make a force use check). On a success, a shield of force protects the bearer. Attacks have -2 to hit (-4 on a raise) for three rounds.
The bell has 10 power points. Each use of the bell costs 2 points (1/round to continue the shield after the original 3).