User blog comment:Xilinoc/Ch. 605 - Don't Call My Name/@comment-24963493-20141113172809

According to MangaStream: (http://readms.com/r/bleach/605/2602/5)

U: "So it appears they let the invasion into the Royal Palace happen." S: "So you've noticed." U: "This is the kamikake based on what was foreseen..." S: "Indeed... It appears that the kamikake was successful."

According to them, "kamikake" means "divine presence," so it sounds like some sort of power to get them to the Soul King's Palace, or maybe a way to get the Soul King out of the Palace during the invasion. Or it might be what healed Ukitake.