Resilience
Resilience (みのまもり) measures how durable a character is. Resilience is added to a character's equipment defense in determining how much physical damage they endure when struck. Any character can consume a seed of resilience to increase this attribute

Dragon Quest III: The Seeds of Salvation edit
In all versions of III, Resilience determines a character's potential Hit Points. The maximum Hit Points at any time is between 195~205% of the character's Resilience score.
Dragon Quest IV: Chapters of the Chosen edit
In the NES version of the game, Resilience acts as it does in III. As of the PSX port, the stat has been modified to influence defence directly.