Combat magic is designed to return the evil caused. No one should tolerate negativity in his/her address, way, so to return the evil or punish the offender is not only logical, but also correct.
But there are options when we really want to punish someone who does not seem to be evil, but "it turned out that way." Here, Combat Magic also helps. And the fact that you choose the ritual of Combat Magic speaks of your strength of mind, which is even commendable. But after the completion of the ritual, it is recommended to pass the ritual of personal purification. Still, to protect yourself, after the victory, would not hurt.