Nupe Kill Droma
Mr. Back-hand Slap
lol Dude, I'm not feeding you words. I'm simply saying that I don't think he can block Force Lightning without a lightsaber because he lacks the one essential element to manipulate Force Lightning: hands. You were talking about suits as protection against radiation, so I figured you meant "suit" in this case... my bad.
If Force Lightning works like regular electricity, then an organic being's body continues the circuit that the electricity wants to travel. Without the lightsaber, a la Yoda in EP's 2 and 3, apparently you have to be able to absorb Force Lightning (not block it) to send it back. If Vader were to absorb lightning, it would short circuit his suit, and he would die (as it happened anyway).
By no means am I an expert on Force powers, but I'll gladly concede my whole argument on this one if you can give a source that shows that Vader actually blocked Force Lightning while in that suit. I've never heard of "Force Shield" outside of video games... Not saying it doesn't exist elsewhere; just that I haven't seen it anywhere else. I'm not going to pretend to be the most well-read authority, but I have my doubts.
I'm not going to bash you anymore for being a Vader fan because I think he's the coolest character in the Star Wars universe. But I think that you're constantly making him out to be invulnerable (or close to it), which he's not. In fact, he's extremely vulnerable, and not by accident!
Thanks for getting that quote, though! My bad on the bashing. 😉