what will be the most stable currency in the next few years?
If you want to reliably hedge, you need to short the USD against your local currency via an instrument available to you, such as an option, CFD, future or forward. Trading another asset as a "hedge" against USD weakness isn't really a hedge, it's diversification.
To be absolutely frank, I consider every person pretending to know the answer to a question like this a charlatan.
Seriously though, I doubt things will turn out as badly as you fear they will.