Here are some more medieval chants and charms in rough translation:
AGAINST WASPSTINGS
Wasp, wasp, venom spike
You come from the devil, you are him alike
Sting the stone but not the bone
Sting the ground but not the neck
Sting the dust but not the flesh
If you sting me, you will fall down dead.
TO KEEP THE FIRE BURNING
Aske pladaske
aske pladus
and never will my fire go out.