The phrase "acts as a protector" is correct and usable in written English.
You can use it when describing something or someone that provides safety, defense, or support.
Example: "The sunscreen acts as a protector against harmful UV rays, ensuring skin safety during sun exposure."
Alternatives: "serves as a shield" or "functions as a guardian."
"A cursed superhero never sells as well as a guardian superhero," one like Superman who acts as a protector, he added.
IL-22 acts as a protector in intestinal mucosal healing through multiple signaling activation steps.
This is for example seen between the pea aphid Acyrthosiphon pisum and the facultative endosymbionts Hamiltonella defensa that acts as a protector of the aphid against parasitism by the solitary endoparasitoids Aphidium ervi and Aphidius eadyi [ 90- 92].
For instance, the presence of superoxide dismutase may perhaps be explained by the fact that the enzyme acts as a protector of tissue damage by scavenging the toxic superoxide anion [ 72].
This varnish acts as a protector or a shield for the flowers and helps them to last longer.
The woman who is often referred to as "Mutti" - "Mummy" - had acted as a protector of German interests.
The role of acute pain is to act as a protector by warning an individual, in order to maintain proper physiological function [2].
Dyer was impressed by Bacon's self-confidence and his artistic success, and Bacon acted as a protector and father figure to the insecure younger man.
Manuel was thus able to organise a grand ceremonial reception which both honoured Amalric and underlined his dependence: for the rest of Amalric's reign, Jerusalem was a Byzantine satellite, and Manuel was able to act as a protector of the Holy Places, exerting a growing influence in the Kingdom of Jerusalem.
Also, neutering may help to decrease a high level of hyperactivity/aggression/stress and thereby act as a protector against potential seizure provocation.
