Does 100% reduced duration of curses make me curse immune?

Does 100% reduced duration of curses make me curse immune? For example, if I attained 250 devotion and used this timeless jewel, would I be curse immune since I would have 100% reduced duration of curses?

I don't think it will make you completely immune. It would be counteracted by anything that had increased curse duration. Also if the curse is being constantly applied, I think you would be cursed. This is how it works with reduced duration of ailments. Even if you have 100% reduced, if you are standing in the ground effect, it is constantly applied, and the effect is encountered. I assume that is the same with curses. If you are in a map with a mod that curses you, or something is constantly applying it, you will probably be cursed.

Against anything that is intermittently cast on you, you should be effectively immune, if you are lowering the duration to 0. My understanding is largely from how ailments work, I assume it is the same, but have not tested it my self. 100% net reduced effect would mean the curse has no effect even if it is constantly applied to you.