"In some form or another, a protection spell is fairly common, yes."

"So you do have a protection spell on this place?"

She'd never once used a protection spell, or known anyone else who did, either.

"Those protection spells might slow some of the bad guys down, if they get that far."

Then he turned his attention back to the protection spell.

And better yet, there was no sign of the protection spell Snorri had reported.

The protection spell would have to look after itself for the moment.

She was surprised at the effectiveness of his protection spell.

He's tried to open it, and was killed by the protection spell.

Therefore, we do not waste power on any type of protection spell.