If Tyra has burn monster, ask your team to kill her first if its possible in any way. Other than that stay close to walls to roll behind if she ults and make sure she has no fire bomb in store while youre planted and on formchange cooldown.
Check the ability. If its exermination, go in mobile form when ever shes closeby, Furia will usually try to hit you with the solar beam the same time you change forms so you can avoid it in time. bait it out.