Massive, dark gray dragon, wings outstretched, roars in attack. Flaming breath erupts from its open maw, engulfing three armored knights. Knights, in full plate armor, are depicted in dynamic poses, one wielding an axe, another a shield, while another is running from the dragon's fiery breath, dust and smoke billow around them. The landscape is a barren desert, with jagged, light brownish-tan rock formations rising against a light blue-gray sky. Perspective is wide-angle, emphasizing the scale of the dragon. The color palette is a mix of warm browns, grays, and blues, with the dragon's dark gray contrasted against the burning orange flames. Realistic lighting depicts strong sunlight casting shadows on the figures and environment. The dragon is depicted with detailed scales, claws, and wings. Knights' armor shows intricate details. Mood is dramatic, intense, and heroic, capturing the struggle against overwhelming odds. The scene evokes a fantasy epic, reminiscent of medieval battles. Style is photorealistic with a focus on dynamic action.