Star Wars: Tales of the Jedi - The Sith War #5

It's Jedi against Jedi as brothers Cay and Ulic Qel-Droma lead their respective Jedi forces against one another -- Cay with his honorable but unproven students, Ulic with the ascendant Dark Jedi horde. The forces clash on the planet Ossus, with the right to the powerful historical artifacts of the ancient Jedi awaiting the victor.