Ash's ultimate ability, Assert Dominance doesn't give her CC immunity at all or Damage immunity until she lands. You can use Void Grip to keep Ash in the air after her leap and let your team kill her before the ult lands.
If Androxus tries to flank and kill you, be careful where you shoot. If he uses Reversal, you can try to shoot behind him and use splash damage to kill him since reversal only takes damage from the front and Androxus can't shoot while in Reversal.
Avoid relying on your turrets as a "Retaliation" Zhin has the ability to use your Turrets to get free Health from his "Perfect Block" card and can use Counter's Damage to kill you quickly. Consider picking up "Tinkerin" so you can fight, not feed.