This page explains how to complete the level 80 post-Shadowbringers quest "Shaken Resolve".
This quest is available if you have completed the quest Shadowbringers.
Starting the Quest
Talk to Tataru in the Rising Stones in Mor Dhona to begin the quest.
Speak with F'lhaminn
Exit the Rising Stones and go outside. Fly upward and go to the quest icon on the map. F'lhaminn can be found at the outdoor seating on the upper level of the building. Talk to her to proceed. There will be a cutscene.
Speak with Tataru
Go south to where the orange arrow is pointing in the minimap and enter the Rising Stones. Talk to Tataru to proceed. There will be a cutscene.
Speak with the Crystal Exarch
You can either teleport to the Crystarium and use the Aetheryte to go to the Dossal Gate, and go east up the stairs and talk to the Crystarium Gatekeep and say Yes to enter the Ocular, or you can go southeast in Mor Dhona and talk to the Saint Coinach Ferryman to go to the Syrcus Trench, then talk to the Ironworks Technologist and say Yes to travel to the First. Talk to the Crystal Exarch to complete the quest. There will be a cutscene.