A richly dressed figure in golden robes stands in the center foreground, facing a seated man beneath a domed niche inscribed with lettering. To the left, a group of men in blue and gold garments cluster together, their attention fixed on the central exchange. On the right, armored soldiers and courtiers look on, some with hands clasped, others gesturing toward the central figures.

Light falls from the left, illuminating the gold details on the garments and the faces of the figures, while casting subtle shadows on the marble floor. The figures are arranged in a semicircular formation, guiding focus toward the confrontation between the standing saint and the enthroned emperor. Fra Angelico uses fine, delicate brushwork to define the intricate patterns on the clothing and the architectural ornamentation.

The composition is carefully balanced, with the throne and dome anchoring the center and the figures radiating outward in rhythmic harmony. A man in a blue robe and red shoes stands at the far left edge, his back turned toward the viewer and his head slightly bowed. In the upper right corner, a young man with long hair and a coral-colored cloak clasps his hands together, standing apart from the armored figures beside him.

The gold dome above the enthroned man casts a soft glow on his head and shoulders, accentuating the metallic sheen of his armor. The tapestry behind the central group is patterned with dark foliage and gold motifs, creating a dense, textured backdrop that contrasts with the smooth marble below. Fine, linear brushwork is visible in the detailing of the soldiers' armor and the delicate folds of the draped garments, especially along the lower edges and sleeves.