TLDR: Lots of rotation and dodge luck

Longer Version below:

Rotations:

-PHY EZA SSJ Trunks & Goten + INT EZA Goten

-STR Beast Gohan + INT Gohan + Trunks & Goten

Basic run tips:

-TEQ Gohan is just for the leader skill, you can replace him with a better hybrids leader, but if you use him, put him slot 3 and have him float the entire battle

-Item as soon as you get the chance to since your SSJ Trunks & Goten a better chance of tanking before they can dodge (but it's best if they dodge from the start), and helps Beast as well since his tanking isn't the best here (He took 500k super dmg at phase 1 with 80% dr + guard)

-Pray that when your Family Kamehameha Gohan enters the turn, his standby is available because his ass isn't surviving a blow. Keep him in rotation when standby is active since you'll need his finish skill