For me in pvp worlds the best way is if you can go Ankrahmun! and start to go to the piramids , pyramids, going up and down fast is almost imposible impossible to kill you.
If you cant do that there is a huge amount of strategic places on cities to go up and down fast to avoid combos or traps or hits from the pk.
Also if you go to places where there is many people that also good because if many people see a Pk you will got help fast since people love to get free frags :3