The phrase "act as a protector of" is correct and usable in written English.
You can use it when describing someone or something that provides protection or support for a person, group, or concept.
Example: "The organization aims to act as a protector of the rights of marginalized communities."
Alternatives: "serve as a guardian of" or "function as a defender of".
The woman who is often referred to as "Mutti" - "Mummy" - had acted as a protector of German interests.
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].
The commission would also act as a protector for whistleblowers.
The Mn3O4 shell acts as both a protector of Fe3O4 in aqueous environments to attenuate T2 relaxation and as a redoxable switch that can be activated in intracellular reducing environments by glutathione.
In sum, a higher IQ-score may either make cognitive problems related to ADHD symptoms more visible or it may act as a protector from the impact of such cognitive deficits, or there may be no effect of a high IQ-score on the association between ADHD symptoms and cognitive functions in preschoolers.
Also, neutering may help to decrease a high level of hyperactivity/aggression/stress and thereby act as a protector against potential seizure provocation.
The role of acute pain is to act as a protector by warning an individual, in order to maintain proper physiological function [2].
The city government, through its zoning power, is supposed to act as a check on the zeal of the private sector, as a protector of the public interest.
It has armed and trained Georgian forces and set itself up as a protector of Georgia.
