This trophy is called "The Meaning of Od" and it is appears to be a story based Trophy which requires the user to complete Scenario 39: The Meaning of Dogma (Iori) or Scenario 39: A World to Call Home (Amari).
As with the entire game, select the best units to use in the battle.
For The Meaning of Dogma, the Victory Condition is to defeat all enemies, but an event occurs once the Xelguard moves towards the center of the map and a few enemies are defeated. The new condition will become 'Defeat Xelguard Mirror.' Defeat the Xelguard Mirror within three turns to earn the SR Point. Once the Xelguard Mirror is defeated, Celric appears and the Victory Conditions once again change to 'Defeat Warth Deenbell.' The TacP Bonus can be earned by defeating Celric with the Xelguard attack named 'Creation 0: Universe Command.'
For A World to Call Home, the Victory Condition is to defeat all enemies, but will change after an event to 'Defeat Warth Deenbell' with Amari. The SR Point can be obtained when defeating Celric in his Warth Deenbell within 3 turns. The TacP Bonus comes from defeating Celric with Xelguard's 'Creation 0: Universe Command.'
Defeat all of the units, before defeating Celric, and the Trophy will unlock upon the completion of the Scenario since Ende's Eye is awarded with Celric's defeat.