In Fire Emblem, dodge is usually tied to Luck. More specifically, the game often uses Luck to reduce enemy critical-hit chance, while Avoid is the stat for dodging normal attacks.

Simple split

  • Avoid (Avo): helps you dodge regular attacks.
  • Dodge / Crit Avoid (Ddg): helps you avoid critical hits, and it is mainly based on Luck.

Quick example

If a unit has high Speed, they may be harder to hit overall, but that is Avoid , not Dodge. If a unit has high Luck, they are less likely to get crit, which is what many players mean by “dodge” in Fire Emblem.

TL;DR: Dodge is usually Luck, while Avoid is the stat for regular evasion.