anybody help me what i need to do this mission i didnt enter the ancient road and i saw orb of vigilance then when i walk to road lighing is damaged me plz anybody tell me ?

You have to find an item that will diminish the power of the orb. There are two orbs and so two items guarded by powerful creatures, kill the creatures and they will drop the items (a bow and a helm - there is information on their lables - you cannot miss it); Search in the lower left and right parts of the map, good luck!