My indestructible dwarf fighter (armour 39, or 51 if I use resilience

See attachment for screenshot.
You will notice also, if you look at the message log in the screenshot, that the queen ant attempted to use Stun on me, but hit the giant acid ant occupying my square instead. However, the acid ant took 0.00 damage (perhaps due to my armour), and I was the one to resist the stunning blow.
If I sit and do nothing, the queen ant does not attack me (perhaps she's trying to move into my square, but it's occupied by one of her allies). She can attempt to stun me (every few turns), with the same effect as before (and she takes 2.71 fire damage from my flaming shield each time

Oh, this is even better! When I attack the queen ant, the acid ant on my square takes the automatic damage!
[pause for brief fight in which I defeat the ants]
It appears there were at least half a dozen ants occupying my square. They kept moving off it to attack me, as I killed the other ants..