Fire Emblem Magic and possible re-scaling.

[Leon_Help4]

https://fireemblem.fandom.com/wiki/Resistance

While a game mechanic technically, in various games, it is shown that an magical attack from a dragon or magic user targets the foe's resistance rather than their physical durability.

https://serenesforest.net/wiki/index.php/Xenologue:_Champions_of_Yore_1_(Script)

And, while not canon (maybe), Awakening DLC has Alm say "'m not mocking you. One of my closest comrades is a woman. They say women have a high resistance to magic."

Should this make most spells negate conventional durability?

 

[Leon_Help4]

https://serenesforest.net/wiki/index.php/Chapter_23:_The_Dark_Pontifex_Lives_(Script)

Marth comments on Chris's high Magical resistance on a canon game.

"Marth: Your resistance to magic is impeccable. You might just be our strongest hope of defeating Gharnef. Yes. If you are there, then... we stand to win."

Some weapon descriptions do also mention magical resistance.