https://baldursgate3.wiki.fextralife.com/Uncanny+Dodge

So I’m familiar with how it works in 5e and how to use it in 5e dnd, but I don’t understand when or how I use it in BG3.

Is there supposed to be a prompt when I take damage to use my reaction (like whether to use divine smite)? I haven’t seen anything like that yet, but maybe I’m misunderstanding how it works in BG3.

It appears as a passive ability in my character sheet.

Any insight (checks) would be appreciated.