Combative magick used against you can be dangerous and malicious at times, destroying love, happiness, your sense of saftey, and many more positive aspects of your life.
A "duel" is a one-on-one battle between 2 Magus. A duel begins when one witch/wizard/warlock attacks the other with a dark jinx, hex, or curse. A "duel" can end within one hour or one year, depending on how many spells are cast and the energy of the Magus.
In a duel you must know how to combat evil spells, without using them yourself. I would suggest using Higher Punishment spells involving praying to your god to repremand the attacker, spell reversal spells, mirror shields, transmutation shields, transference sheilds, and other types of neutral combat spells.
I put this here so you could put your best White and Grey magick combat spell suggestions up here for everyone.
I will be putting up some spells of my own.
P.S.- By "duel" I don't mean HP, that's why I put it in quotes. Dueling in the real world is nothing like HP. It's much more serious.