What was the reason for the RTO?
A priority is effective communication with the back to keep them in the loop "Attention crew on station" then work out what the problem was, is the aircraft safe, will the aircraft remain safe?
If so, then you may come off the runway.. It depends on a lot of factors such as the reason for the initial RTO, speed at which it was initiated (brake temps) etc.
The runway is a better place to evacuate if it is needed, as the emergency services have un restricted access to the aircraft.