Hi,
I just did the mission step of the Totality of War quest,
What you have to do is
1. Kill all the giants in the zone that are not attacking the Statue of Rallos Zek. The giants are all in and around the arena area.
2. One giant roams in the building that leads down to the arena kill him too then move into the arena to get the task update.
3. Kill the Giants that are attacking the Statue of Rallos Zek. After that Rallos Zek himself will spawn.
4. a. kneel down and target Rallos Zek, b. say 'all hail Rallos Zek'(just hailing him will lead to a DT), c. give him your earring, d. when you get it back, give him the ore.
*****Important to Note: If you just give Rallos Zek your earring without kneeling or saying 'all hail Rallos Zek' he will ignore you, if giants are up he will summon them to you and despawn when you say 'all hail Rallos Zek' while kneeling.
5. Talk to the Crusader in EW
6. Make the Earring in a jewelery Table, Crusader Vraket gives you the recipe.