Harry skidded to a halt and looked around. Snape had just emerged from the hidden staircase behind the stone gargoyle. The wall was sliding shut behind him even as he beckoned Harry back toward him.
" Blast it! " —but slipping backward on the deck, his uplifted eyes caught the flames; and immediately shifting his tone he cried—" The corpusants have mercy on us all! "
Nor does it preclude most people, Christian as well as heathen, from saying something similar (or even stronger) when the dog barfs on the shag carpet or the car slips off the jack.