After leaving the corridor jump along the wall on the left. From the landing in the middle head to three suspended columns. You are bond to fall off them a moment later because of bad luck and the script.
Elika is temporarily immobilized the Concubine, one of the Ahriman's bosses.
The Concubine knows how to make a false image of herself which unfortunately makes the player's life much more difficult. After interlude scene jump on a column on the left side of the arena and move to another level. Jump to the place where the enemy stands.
Come up to the Concubine and attack her. The image will disappear and appear on the opposite side of the chamber.
Jump down to the arena and go one level higher using the same column as few moments ago. This time head left.
Attack the Concubine again. She will disappear and reappear again in another place.
Attack the image for the third time. This time a real enemy appears on the arena next to imprisoned Elika.
Jump down and defeat the boss.