This one was a pain, and I don't think it was supposed to be. I've included a mini-log that describes the problem along the way:

(9 AM 19:06:47)
Groupmate2 wields a Tanic's dress blade.
A human merchant is covered with bleeding wounds.

(9 AM 19:06:47)
Your slash EVISCERATES a human merchant!
A human merchant parries your claw.
A human merchant parries your claw.
Groupmate1's slash MUTILATES a human merchant!
Groupmate1's poisonous bite mauls a human merchant.
Groupmate1's slash maims a human merchant!
A human merchant's stab misses Groupmate2.
A human merchant is gushing blood.

/* Now right here, he's clearly attacking Groupmate2 and not me. */

<cutprompthere> (10 AM 19:06:51) blind
A cloud of dust fills in the room.
A human merchant is already blind.
A human merchant's stab decimates you!
Hentogi's trip misses a human merchant.
A human merchant is gushing blood.

/* Here's where he hits me for dusting him. Also, note the change in gametime hour. */

(10 AM 19:06:52)
A human merchant parries your slash.
A human merchant dodges your claw.
A human merchant dodges your slash.
A human merchant parries your claw.
A human merchant's stab MUTILATES you!
You sure are BLEEDING!
A human merchant's stab maims you!
You sure are BLEEDING!
You dodge a human merchant's stab.
A human merchant is gushing blood.

/* And here's my problem, where he redirected to me because I was the last one he hit on the hour, from the dust though and not from tanking him. */

(10 AM 19:06:54) flee