The sentence sets up a contrast: the reputation was harmed during the ordeal, but came out fine after it. Shaken...unscathed perfectly fits — 'shaken' means temporarily disturbed, and 'unscathed' means without lasting damage. 'Destroyed...intact' is contradictory. 'Damaged...impaired' gives no contrast. 'Tarnished...sullied' are both negative with no recovery implied.