Orcs expect Goblins to run away. As far as the average Orc is concerned, running away is what Goblins are best at!
This unit does not have to make a Panic test when a friendly Goblin unit is destroyed or Breaks and flees from combat whilst within 6" of it. Nor does this unit have to make a Panic test when it is fled through by a friendly Goblin unit.
Note that, for the purposes of this rule, a Goblin unit is considered to be any unit that is made up entirely of Goblins of any kind, mounted or otherwise. This includes any war machine or chariot that is crewed entirely by Goblins. Should a Goblin unit be joined by an Orc character, it is no longer considered to be a Goblin unit.