Victoria is the Roman goddess of victory, whose temple on the Palatine was vowed in the Samnite war, and whose image stood on the standards of the legions. She is the Greek Nike given a Latin name and a Roman state, and she became the goddess of the emperor's own victories. The altar of Victory in the senate house was removed in 382 during the Christianisation of the empire, and the protest that followed is one of the last great statements of the old religion.
Modern Practice
Victoria is called on at the end of a contest, a case, a campaign - and before it, for the turn. Her practice is public thanksgiving: the crown given, the win named, the obligation acknowledged.