A cinematic portrait of a young girl wearing an advanced exo-suit, her sci-fi armor gleaming in the harsh light of a nuclear explosion. The background features a colossal nuclear mushroom cloud, its blast wave captured mid-sweep, dispersing nuclear ash into the atmosphere. The scene is rendered with maximum detail, presenting a futuristic and hyper-realistic style. The image is captured in 8K UHD, with a focus on photorealism and super-detailed textures. The portrayal suggests acceleration, with light flashes suggesting speed, as if time is paused in this intense moment. The painting exhibits a third-person view, showcasing intricate armor design amidst complex lighting and dynamic staging, adding to the cinematic composition.