This page explains how to complete the level 80 post-Shadowbringers quest "Alisaie's Quest".
This quest is available if you have completed the quest Reflections in Crystal.
Starting the Quest
Talk to Krile in the Rising Stones in Mor Dhona to begin the quest. There will be a cutscene.
Speak with Alisaie
Talk to Alisaie to proceed. There will be a cutscene.
Speak with Tataru in Mor Dhona
Check on the exit to the Rising Stones and say Yes, then go outside. Go east until you can go south to where the orange arrow is pointing in the minimap. Talk to Tataru and there will be a cutscene.
Speak with Alisaie Again
Talk to Alisaie to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to G'raha Tia to accept the next quest: The Wisdom of Allag.