JohnSnow
Hero
Star Wars Saga Edition has a set of talents for Lightsaber wielders that works that way.
The Block talent grants the character the ability to negate a melee attack by making a Use the Force check. The Deflect talent grants that ability (to an extent) against ranged attacks, effectively functioning as a form of armed evasion (replacing one's Ref defense with a skill check). Finally, Lightsaber Defense allows you to gain a +1 deflection bonus until your next turn as a swift action. That last talent can be taken multiple times and stacks, granting a deflection bonus as high as +3.
Those make a great deal of sense as Shield talents available to fighters. On the other hand, since we don't KNOW how classes gain abilities, they might also be done as powers or even feats.
The Block talent grants the character the ability to negate a melee attack by making a Use the Force check. The Deflect talent grants that ability (to an extent) against ranged attacks, effectively functioning as a form of armed evasion (replacing one's Ref defense with a skill check). Finally, Lightsaber Defense allows you to gain a +1 deflection bonus until your next turn as a swift action. That last talent can be taken multiple times and stacks, granting a deflection bonus as high as +3.
Those make a great deal of sense as Shield talents available to fighters. On the other hand, since we don't KNOW how classes gain abilities, they might also be done as powers or even feats.