It looks to me as though the left D duct disintegrated. You can see the jagged remains of it, and some pieces that have been put inside the engine. This is a known B777 problem on the Trent engined aircraft. The nozzle has also ripped off. Not surprising, as it is supported by the D duct at its aft end. I would expect that the engine is OK.
We had a similar incident here in ARN a couple of years ago with a MH B777. Needed a new D duct and nozzle, but not much more.