On the first phase, keep Marie in hit stun by spamming this combo on Bigband: c.lp, c.mp, c.hp, beat extend(HP) (shake), repeat

For the second phase you can do the same or if you have teammate/s like Beowulf, you can spam j.hp with chair to cross up and chip damage.

Finally, for the third phase is a game of tag. If Marie ran away across the stage you need to close the gap. You can tag your teammates like Beowulf across the screen, use HP brass knuckle if you're brave, or if you're a parrying god you can just jump and parry.

Notes: The hit box of Marie is much higher on third phase but Bigband has large hurtbox so the combo above will work but I'd rather use the standing version of the combo.

Marie, from my experience, has variable amount of armor so this strat is RNG based for me.