Spoiler:
Anikan will kill him because, Mace confonts palpatine in his office, mace is doing this because he know palpatine is a sith yada yada yada, so palpatine does force lightning on him, anikan walks in and anikan is trying to figure out what to do, save mace from palpatine or help palpaltine by killing mace, so since we know he turns into vader, DUH, he tries to kill mace, Anikan and Mace go through a furious lightsaber duel and then mace loses....
Originally posted by PVS
i think mace will trip and fall on his own lightsaber.
he gets distracted by a butterfly, no, not really.
since mace DOES confront palpatine and blocks his lightning, ect. and there is the fact that sidius WILL fight with a lightsaber, i think he either fights sidius one on one in a pretty awesome battle like dooku and yoda, or like moonwalker said, anikan comes and does his little thing.
i just hope people don't go yelling and chearing when this scene happens like they did when yoda confronted dooks.