When it comes to adhering to the rules of conduct or accepted standards in a particular situation, there are several synonyms for the phrase "according to protocol." One such phrase is "in compliance with protocol," which signifies that the prescribed procedures have been followed correctly. Another synonymous term is "in conformity with protocol," which implies that the instructions have been complied with in accordance with standard practice or regulations. Additionally, "as per protocol" can be used interchangeably with the phrase, with the same meaning of following established rules or guidelines. Using any of these phrases assures that proper procedures have been followed to the letter.