I'd say using a pos1 dodge ninja such as Kurama Naruto or Hokage Minato is important vs a faster pos1 Susano Itachi , that way he can't interrupt you in any way

But the problem comes surviving the round 1-2 vs that team, removing the barrier/shields so everyone has much less damage would come in handy and having tanky clones or so to tank thru the attacks.

Maybe Shark Kisame + Mangetsu so he can't be interrupted/chaosed and he will both remove the barrier buff and give sharks to tank some attacks + interrupt his round 1 2x standard attack mystery

So I don't want to recommend any specific teams as I am not sure which one could work exactly, but those are some of my opinions/ideas on it

Mangetsu kurama x

X kisame x

Water main x x

Talents: 22442, summon: koh, summon mystery: ninja dog

This one seems to work as long as water main survives up to when itachi is the only ninja that survived poison.

you could try with some heavy cancer setups.

Roshi on first line to soak up damage and clear barrier on round 2

Skillbroken Kurenai and Tsunade (or sailor sakura) somewhere behind (remember to think of Susanoo Itachi's repulse damage)

Watermain or Windmain with heal or dance of impetus.

Yes I was thinking of suggesting you exactly that kind of lineup, wasn't sure if it would work though

Good if it does

also u could just wait for him to plunder someone else lol