Oh, and one more tip, take the exact amount of runes you need. Prayer boosting clothes (if you have 37+ prayer). Don't take anything worth of value. And walk to the end of the arena, it has only one entrance, if you are close to that pk'ers will be able to attack you. If you are far away of that pk'ers won't be able to attack you because they will be attacked by the god mages. If you do happen to be attacked, just drop all unimportant stuff you have with you (monk robes, runes, god cape), so you keep your staff and other things that cost money.