There is power in meanings of the old images and symbols. Below is a compendium of common symbols, charms and totems from antiquity that are thought to be useful against psychic aggression:

Abracabadra: One of the oldest protective amulets, this is the word Abracabadra written in a triangular form like as below for Protection:

A
AB
ABR
ABRA
ABRAC
ABRACA
ABRACAD
ABRACADA
ABRACADAB
ABRACADABR
ABRACADABRA

Or written as follows with an enemy