I would be tempted to put it into the dative:
auxilio - for help

alternatively a gerundive+genitive
auxilii clamando - for the calling for aid
adiutantis vocando 

Unfortunately I don't have my Latin-English dictionary handy: these are the best I can do in a pinch.


Wesley Parish

Quoting MorphemeAddict <[log in to unmask]>:

> Can someone here please translate the following phrase into Latin?
> "For summoning calling/for help"
> It's on a fictional magical amulet which functions without conscious
> awareness of the wearer.
> If there is a set phrase for this sort of thing, that would be even
> better.
> stevo