Arcite prays to Mars, god of war, for victory. He believes that only force can win Emilie's love.

Why does Arcite pray to Mars?

Arcite prays to Mars for victory in the tournament. Part IV. Just before the tournament begins Theseus declares that he wants no lives to be lost and restricts the kinds of weapons that may be used.

Who does Emelye pray to in the Knights tale?

The forces are assembled one year later and lavishly banqueted by Theseus. On the early morning before the tournament, Palamon prays to Venus to make Emelye his wife; Emelye prays to Diana to remain unmarried, or else to marry the one who truly loves her; and Arcite prays to Mars for victory.