Eukrasian Diagnosis

Acquired: SGE (actions)
Level: 30
Type: Spell
MP Cost: 800
Casting: Instant

Recast: 1.5s (GCD)
Range: 30y
Radius: 0y

Targeting: Self, ally
Patch: 6.0

Restores target's HP.
Cure Potency: 300
Additional Effect: Erects a magicked barrier which nullifies damage equaling 180％ of the amount of HP restored. When critical HP is restored, also grants Differential Diagnosis, nullifying damage equaling 180% the amount of HP restored.
Duration: 30s
Effect cannot be stacked with Eukrasian Prognosis or scholar's Galvanize.
※This action cannot be assigned to a hotbar.

— In-game description

Eukrasian Diagnosis is an action unlocked at level 30. It is available for Sage.

Related traits

Addersting (Lv. 66) - Grants 1 stack of Addersting when the barrier granted by Eukrasian Diagnosis to any party member or the barrier granted by Eukrasian Prognosis to self is completely absorbed.
Enhanced Healing Magic (Lv. 85) - Increases the healing potency of Diagnosis to 450 and Kardia to 170. Also increases the strength of barriers granted by Eukrasian Diagnosis to 180% the amount of HP restored, and Eukrasian Prognosis to 320% the amount of HP restored.

Related actions

Notes

Upon using Eukrasia, Diagnosis will change to this action. After using it or other Eukrasian actions, it will revert back to Diagnosis.
To clarify, "when critical HP is restored" in this context means "when this action's heal is a critical hit".
Barrier potency is 125% the amount healed until Enhanced Healing Magic is learned at Lv. 85.
The icons for Eukrasian Diagnosis and Differential Diagnosis are slightly different.
The barrier will not stack with those granted by Sage's Eukrasian Prognosis, or Adloquium or Succor from Scholar. However, it will stack with other barrier actions from Scholar (e.g., Seraphic Veil) or from other jobs.
This action is analogous to Adloquium for Scholar.