He pulls Helen before him, putting himself in between the flimsy mostly-human and the explosion. The portal closing catches just the beginning of the explosion's shockwave, throwing them back into the darkness.

Yrael is moving again almost immediately. "Everyone still with us?"

Helen is dazed, working out what happened. "Where are we?"

Yrael can't smell any blood, and from the little of the blast they caught, internal injuries aren't likely. She'll live.