A full-body portrait of a girl in an advanced exo suit with sci-fi armor, set against the dramatic backdrop of a nuclear explosion. The scene captures the intense blast wave and swirling nuclear ash, embodying the energy of atomic fission. The setting is incredibly detailed, offering a cinematic and futuristic style. The image is rendered in stunning 8K UHD, with a focus on super-detailed photorealism and hyper-realism. A flash of light suggests acceleration and speed, as if painted in a third-person view with long exposure. The scene is characterized by complex lighting and cinematic staging, evoking the feel of a high-budget movie still in a science fiction universe.