The antonyms for the phrase "subject to loss" are "immune to loss," "invulnerable to loss," and "protected from loss." These terms indicate that the object, entity or person is not susceptible to danger or damage, and is secure from any potential loss or harm. Other related antonyms include "saved from loss," "guarded against loss," and "shielded from loss." These concepts are often associated with the idea of insurance or risk management, where individuals or organizations seek to reduce their exposure to financial, material, or reputational risk. By being immune to loss, a person or entity can rest easy, knowing that they are not vulnerable to any potential harm or misfortune.