Incubating Necromites and spirit guardians damage loop HELP

[Manvitsbrekka]

So, In the Ketheric Basement Fight I've got a whole load of Necromites dying in a circle around Shadowheart. She has previously cast Spirit Guardians, so they die, go into a skeletal Involucre, get hit by spirit guardians, form into necromites, die etc etc. Any ideas how to end this loop? I currently can't take my turn as it keeps looping.

Honour Run, so no saves that aren't in that loop : /

[Raz]

End her concentration. Her spell can be cancelled by hitting the X on her Concentration in the bottom left of the screen, right underneath her portrait.

[Manvitsbrekka]

Thanks for the tip Raz - unfortunately it's not her go - the Necro's take a turn, then get zapped by SG and because they're all grouped when they die there's the loop.