Source: Starfinder Core Rulebook p.71
As a standard action, you can use your custom rig to activate an energy shield around yourself. This shield provides you with a number of temporary Hit Points equal to your Intelligence modifier plus your mechanic level. The shield remains active for 1 minute per mechanic level or until all of its temporary Hit Points are depleted, whichever comes first. Once used, you cannot use this ability again until you spend 1 Resolve Point to regain Stamina Points after a 10-minute rest; your shield automatically shuts off during this period of rest.