Mephisto torment 10 any input would be appreciated (spiritborne)

Level 225 spirit borne have the evadeswarm pretty much follow online build but I cant even get past mephisto first form on T10. Am I missing something or am I just to weak id like to kill him atleast once before season end . Even joined a group last few days and this dude will 2 shot me lol. What the hell am I missing. Ive been able to solo lilith at T8 with ease T9 abit of struggle.