You can also use Chewie's taunt if an ally has the Shatterpoint debuff with no way to cleanse it in order to prevent Mace Windu from one shotting them.
Finally, attacking the support droids will reset their turn meter, preventing them from helping Mace Windu.
Replies
https://forums.galaxy-of-heroes.starwars.ea.com/discussion/485/shatterpoint
This debuff lasts for one turn, and can be removed by casting any buff on the affected character.
A list of basic tank abilities that most players should have:
You can also use Chewie's taunt if an ally has the Shatterpoint debuff with no way to cleanse it in order to prevent Mace Windu from one shotting them.
Finally, attacking the support droids will reset their turn meter, preventing them from helping Mace Windu.