You can deploy a Shield to be removed from the Raid list and avoid PvP battles until you're ready.

REMINDER: If you log in for 6 consecutive days, you will automatically be given a Shield on the 7th day. If you do not attack other players PvP), you will receive a free Shield each consecutive day you log in thereafter. If you attack (PvP) other players, the Shield will be removed and your consecutive day count will be reset.