Xa'lor was a protoss carrier. It was commanded by Executor Amur.
It was carrying preserver Zamara when it came under attack by the Nerazim serving Ulrezaj. While massively armored, it was outnumbered and swiftly overrun. Amur ordered Zamara into an escape pod, and she was able to flee the ship just as it was destroyed.
References[]
Golden, Christie (June 30, 2009). StarCraft: The Dark Templar Saga #3: Twilight. Simon & Schuster (Pocket Star). ISBN 978-0-7434-7129-9