How would you recommend both preparing for and protecting your voice when given roles that require screaming/yelling/etc? I can imagine any anime actor would have their vocal cords torn to shreds when shouting for battle scenes, is this something that would just require regular practice to strengthen cords, or is there a particular way to shout and bluster that will do less potential damage to the voice?
The easy warmup is to sing on your way to the job. Or if you’re not in the mood to sing anything in particular, just do as many scales as you can squeeze into your range.
While in session, err on the side of doing theatrical projecting for yelling. Which is basically speaking as loudly as you can just on the verge of screaming, without screeching. If you listen to the callouts in Call of Duty, those are pretty good examples of a stopping point for how far to push the yelling.