Stargate SG-1: Ba'al

I, Ba'al is a short story, which was published by Titan Magazines in Stargate SG-1/Atlantis/SG:U: The Official Magazine 31.

Publishers Summary
Ba'al was prepared to bide his time, awaiting the fall of other System Lords before embarking upon his own schemes of domination. Then he met an immovable object named O'Neill...

Chronological Placement
The short story took place before the Stargate SG-1 episode "Abyss" in Season 6.