Popping manawall so that it migates 2nd and 3rd earth shaker will help healers to keep you topped for the tether explosion unless tanks take both during earth shakers in the last phase.

Basically everything except for earth shakers is magical (rage of bahamut, megaflare, tether explosion.. and ahk morn) so make sure to keep an eye out for res sickness etc and dont forget to use Apoc when needed (res sickness, tanks with 3 stacks in P2 etc).

Manaward needs to be popped before 3rd earth shaker hits you for it to migate the tether explosion afterwards, this is based on latency though.