B777 flight crew reported engine failure on take-off roll and a subsequent rejected take-off and return to gate for maintenance action.

Narrative

Normal preflight. Normal walk around. Nothing abnormal visual or systems wise. The only thing we had discussed a few times while waiting for the Maintenance Release was something to the effect of ETOPS flight needed. I am not sure if that was from the previous flight. This was an issue that was brought up a few times. Both between Captain; myself; and MX (Maintenance). MX said this had been completed. Normal taxi out. I had planned a runway XXL departure as well as pulled data for runway XXR. They gave us a runway change with two aircraft ahead of us to depart. I was able to load new data and run the Runway Change Checklist and verbalized it while doing so. I noticed Captain was following along while I was verbalizing and pointing to the changes I had made. Tower cleared us for take-off and advised us of traffic on an 8 mile final. Captain was performing the take-off on runway XXR. After stabilizing the engines and advancing them to take-off power is when the engine failure occurred; I believe. We initially got a Config Steering Warning Message as we were being rushed by Tower to take-off since the traffic on a was now at a two mile final. This led to some confusion on my part until we both noticed the aggressive pull and center line deviation to the right. That is when I believe I called engine failure. Captain directed me to advise Tower and make a PA. After doing this; I returned with the Captain to try and figure out what went wrong. This is when we noticed the engine completely shutting down. Then the Engine Fail Caution Message populated. Captain commanded the Rejected Take-off Checklist and we started to run that. This checklist led us into the Engine Fail Checklist as well. After shutting down the engine and confirming we were on the ground; I believe the Engine Fail Checklist had me go back to finish the Rejected Take-off Checklist. It was at this point that other aircraft has advised the Tower that we were on fire. Tower said they had already called crash fire rescue. I do not believe the Captain heard this and I stated that we might be on fire and there was no need to tell Tower to roll the trucks since this had already been done. This led to some confusion on my part since we were not receiving any fire warning messages. Nor did we throughout the entire incident. We briefly mention going to the Evacuation Checklist; but since we could not yet confirm we were on fire; we continued with Rejected and Engine Fail Checklists. I asked Tower for a discreet frequency since everyone was stepping on each other due to multiple go-arounds. We had trouble trying to get hold of ARFF (Airport Rescue and Firefighting) on the discreet frequency and I went back to Tower to inform them that we had the parking brake set and no one was answering on the discreet frequency. Once we established communication; ARFF informed us that there was no fire; only white smoke coming out of the right engine. We worked out a taxi plan with Tower to get back to the gate with only one engine. We had ARFF follow us back to the gate where no further incidents occurred.Passengers deplaned normally through doors L1 and L2.