The Baal priests were to set up an altar and lay out a sacrifice on it; then they were to pray to their god to light the fire. Elijah would do the same.
فكان على كهنة البعل ان يقيموا مذبحا ويضعوا عليه ذبيحة ،‏ ثم يصلّوا الى إلههم ليشعل النار .‏