Air carrier Captain reported fire warning lights during takeoff roll and a high speed rejected takeoff.

Narrative

On takeoff XXR just above 100 knots I noticed an amber light flash on and off rapidly on the glare shield but didn't identify which one came on. I stated continue. Then about 110 to 120 knots the overheat and fire warning lights on the glare shield illuminated and the fire bell was sounding. We performed a rejected takeoff and brought the aircraft to a stop on the runway and notified ATC. I held the brakes while the First Officer made a PA to remain seated and ran the QRC for rejected takeoff. By this time the lights went out and there was no fire indication. The First Officer said he observed the Eng 1 overheat light on the Fire Protection Panel illuminate momentarily. The rejected takeoff checklist was accomplished to step 5 which shutdown the number 1 engine but did not pull the fire handle as it was not illuminated. We told ATC to roll the emergency vehicles and they assessed the aircraft. They said there was no indication of fire or damage. I checked on the Flight Attendants and briefed them we will be clearing the runway. We taxied clear of the runway and stopped to wait for the brakes to cool. We finished the checklist and checked the brake cooling charts and determined we needed 60 minutes to cool the brakes before taxiing to the gate. I made several PAs to the passengers to keep them updated. I called dispatch; Maintenance Control and the Chief Pilot. We taxied to the gate with no issues after 60 minutes. An ELB (Electronic Log Book) entry was made and a mechanic met us at the gate and we briefed him on all the indications we saw. It's important to note that the eng 1 loop A was deferred and it's possible that this is related. The mechanic did not see any engine exceedances when they ran a test.