Royal Guard is a technique for Gladiolus that has him protect Noctis with a shield. It negates damage and puts the player into cover status, providing the Serene status to Noctis, increasing HP and MP recovery. This does not bring Noctis out of Danger status. Royal Guard depletes tech bar by one. The protection lasts for a short period of time, or until Noctis initiates the follow-up attack. Gladiolus needs a shield equipped to use it.
royal guard describes any group of military bodyguards, soldiers or armed retainers responsible for the protection of a royal person, such as Emperor/Empress, King/Queen, or Prince/Princess. They often are an elite unit of the regular armed forces, or are designated as such, and may maintain special rights or privileges.A