If a player is exposed to a certain amount of radiation, they could suffer radiation poison related symptoms (for example, dizziness or disorientation). This can be prevented by two methods:
A radiation resistant suit-

A chemical - some sort of chemical, which can be inserted into a syringe, which can temporarily prevent either effects of radiation poisoning or prevent radiation posining touching you at all. This would be very related to the 'RadAway' from fallout 4.
Out of both of these, a radiation suit would be most effective.
There can be some sort of way to decontaminate radiation from an area and one way I imagined this could be possible is by using an electrical, metal radiation container which kind of 'sucks' the radiation into itself and, once it reaches its maximum storage capacity, will lock itself (but can be exploded if broken because of the air pressure). The filled contains can either be kept along or, probably a very anti-environmental friendly move, dumped out into the ocean. They will just look like the traditional cylinder radiation container such as this:


So, what do you guys think?
Edit: Also there can be a decontamination chamber which can clean radiation suits ( or just people themselves) by shoot jets of water at them while being cleaned by an automated machine. I was thinking of a concept like this:
