The key is the difference between what affects the character spending the Force points and what affects to Vong character. TJ has a useful list somewhere--it might need updated, though. Anyway, for a few of the things you asked about:

Lightning Assault does damage, so it's considered to affect the character, so it would have no effect on Vong.

Brutal Strike and Sith Rage are considered to affect the attacking character, so they can be used (I think an argument can be made the other way for Brutal Strike, but that's how it goes lol)

Same with things like Lightsaber Assault and Lightsaber Throw--they affect the spending character's ability to attack, rather than the character being attacked).

I would think Event Manipulation would work against Thud Bug, because what it explicitly says that the character takes the damage, then heals it. The ability itself (or the character using the ability) is not affected by that.

You cannot reroll anything anything the Vong.

Of course, this is all different for a character who has Vongsense or is benefiting from Faith in the Force.