Widebody; Low Wing; 2 Turbojet Eng
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Weather / Turbulence
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport
Aircraft; Weather
Everything was normal until on climb out we were struck by lightning while flying through a small rain shower.  None of the crew; myself included; thought the rain shower posed any threat to the aircraft and we were all surprised when it happened.  Of the 4 main display panels 3 of them went blank.  We leveled off at 6000 feet and evaluated the situation.  I was the second IRO so from my seat I couldn't see the one remaining panel very well.  I was told later that the panel had not auto switched into a combined mode and the captain had to manually switch to INBD DU in order to restore his attitude display.  We looked at the checklists that were presented and there was none about restoring a lost display.  I looked through my iPad to see if the manual had a checklist for a lost display and couldn't find one.  The captain had us use the Loss of All Displays checklist to see if that would be of some use since it was the closest we could find.  That checklist had us reset the L CCR which caused a loss of the lower display unit for around 40 seconds and did not restore the left display panels.  At that point the decision was made to return.  We climbed to 9000 feet and I was tasked with running the fuel jettison checklist with the Captain. The 'fuel to remain' was blank so we watched it manually and turned it off at the correct time.  The rest of the flight was uneventful.  Surprisingly the aircraft even showed LAND 3 on final approach as if nothing was wrong.  Crew worked exceptionally well together.
First Officer reports being struck by lightning during initial climb; resulting in three of the four main display panels going blank. Attempts to restore the lost panels are not successful and the flight returns to the departure airport after dumping fuel.