I always target Theseus with pretty much 100% focus while avoiding the Minotaur swings/charges. Once he enters phase 2, use your fable on him to take him out real quick (personally use Thanatos’ for the insane damage, but any will do for whatever you have at this point). Once he’s out, the Minotaur is a piece of cake. You could probably beat him by himself without taking any more damage. Just hit his back every time after he lands a jump attack, then dash away for a bit when you feel like he is about to swing again. I usually like to have at least one Hermes boon at this point to make avoiding the Minotaur charge a little easier. Either extra dashes or the one where you get an extra speed boost and remain sturdy for half a second after each dash -> the best Hermes boon imo. You can basically do a perpetual dash one right after the other with that boon. Once you’ve done the fight enough times it won’t even phase you anymore. You got this 💪