Anti stalker spell
Timing - midnight on a saturday on the dark moon, or when the moon or sun is in scorpio, or the hour of Saturn, or when scorpio is rising. However if immediacy is required - so be it.
Make some justice powder - equal parts graveyard dirt (preferably from ancestral grave), dirt from a prison, dirt from a courthouse.
Mix with equal parts wormwood and mullein.
Call the quarters
Take a picture of your target and put it into a jar with the justice powder. Pierce the picture with a rusty nail, saying
Everybody knows you reap what you sow,
Captured and caught, your folly is known,
The dead have arisen, the hounds at your door
The horned one is coming to settle the score!
Pester us not, from the earth to the sea
I've locked you away and I'm tossing the key !
Pierce the jar lid with the nail, put the nail in the jar, and close it tight.
Bury it upside down by a river where his strength can drain away.
Go a different way home than how you came.
The very best spell I know for these situations is the one written on a legal document, called a restraining order :).