Here are some examples:
* Reschedule: To schedule something again.
* Resubmit: To submit something again.
* Restock: To stock something again.
* Resurrection: The act of rising again from the dead.
* Resist: To oppose something again and again.
* Resolution: A firm decision to do something.
However, "res" can sometimes mean "back" or "behind", as in:
* Respite: A period of rest or relief.
* Respiration: The process of breathing.
The meaning of "res" can vary depending on the word it is attached to. It's always best to look at the word in context to determine the meaning.