“Seek Malok at the heart of Oryx's power on the Moon..”
“Reach the Shrine” is an objective in the mission The Blighted Chalice in Destiny: The Taken King
Go on down the corridor through the Hall of Wisdom leading toward Shrine to Oryx. The team will need to fight on through the corridor and reach the shrine itself.
There are a number of Blights between the Shrine and your team. Be ready to fight on through. Once again, be sure to use the cover which is around here. It will help keep the team alive.