Cassius, though very sensitive, it seems, to the influence of omens affecting himself, was quite philosophical in his views in respect to those of other men.

He argued very rationally with Brutus to convince him that the vision which he had seen was only a phantom of sleep, taking its form and character from the ideas and images which the situation in which Brutus was then placed, and the fatigue and anxiety which he had endured, would naturally impress upon his mind.
But to return to the battle.

Brutus fought against Octavius; while Cassius, two or three miles distant, encountered Antony, that having been, as will be recollected, the disposition of the respective armies and their encampments upon the plain.

Brutus was triumphantly successful in his part of the field.

His troops defeated the army of Octavius, and got possession of his camp.