If you have the LMM flag, Minok Targsk in the Halls of Honor says the following
You say, 'Hail, Minok Targsk'
Minok Targsk says 'Mithaniel Marr has fallen? We need to get word to Grenic quickly. Inside the Plane of Valor you will find a contact in the guard camp. Speak with Guardian Reloios and he will get you to Grenic.'
You say, 'Hail, Guardian Reloios'
Guardian Reloios says 'Word has traveled that the hero who killed Mithaniel Marr would be headed here. How can I help you Zyrey?'
You say, 'I need to speak to Grenic'
Guardian Reloios says 'This will be a tough task indeed. I can get you and Grenic to the Halls of Honor but you need to take care of some [eyes] for me.'
You say, 'eyes'
Guardian Reloios says 'There are four main watchmen that guard the entrance to the dragon's lair. You need to assassinate them so we can enter unnoticed. Bring me back their eyes and I will risk taking you and Grenic.'
-Turn in
Eye of Kriead
Eye of Gregek
Eye of Tead
Eye of Yelios
Guardian Reloios says 'Good work with those watchmen, you have proven your worth. I can now safely guide you and Grenic through the passage to the Halls of Honor. Quickly head just east of the dragon's lair where Grenic awaits word of our success.'
You say, 'Hail, Grenic Drere'
Grenic Drere says 'I have been waiting for this day to come for a long time. I knew they would see that I did nothing wrong. I am forever in your debt. Please run ahead to the Halls of Honor and let them know I will be there soon enough.'
I am not sure on the trigger "I need to speak to Grenic", in fact Guardian Reloios will respond to any sentence with "speak" and "Grenic" in it. I am unsure if Guardian Reloios has any additional dialogue.