Combat spell

As state, magick wont be much help if you tried to directly fight a physical person with it.

However the best way to go about using magick and fighting I believe is to effect your mental state. For example using magick maintain a calm mind during a fight.

The closest you come to actual combat magic, as in within physical combat, would be concepts revolving around Chi within the martial arts, the Beserker concepts within Norse magic, and similar such ideals.

Given the rapid and immediate nature of a fight, these aren't spells. Mere words won't do anything (unless you're talking yourself out of a fight) and there is no time for ritual - not that ritual would do much of anything beyond implement a subconscious influence anyway.

Using your chi can help you stay fluid, help you stay strong, can help you be aware, help you strike faster, so on and so forth. To achieve such things often requires years and years of study.

I have a combat spell named bertha... Bertha is my 8 gauge shotgun... She's super effective against pretty much everything.

The best part about bertha... I rather enjoy shouting "It's super effective!" after I shoot deer with her...