Takeoff aborted, aircraft stopped, parking brake set, speed brake down, order the FO to advise Tower "Call ATC Mayday", or "Call ATC abort takeoff" if less serious, PA "Attention crew at stations!" twice, then fire recall items, if fire extinguishes, PA " Attention Captain speaking: remain seated!" twice, if fire still on, perform EVACUATION NNC, and when it says Advise the cabin the evacuate, PA "Evacuation" 3 times.
The Captain does all PAs.