The phrase "a sort of protection" is correct and usable in written English.
It can be used when describing something that provides a level of safety or security, but not in a definitive or absolute way.
Example: "The new policy serves as a sort of protection against data breaches, although it is not foolproof."
Alternatives: "a kind of safeguard" or "a form of defense".
Often it revolves around an entre, a sum demanded of junior officers by their superiors as a sort of protection money.
The careful orchestration of TV news, like the delineation of newspapers into sections, was perhaps, all along, a sort of protection.
One paragraph asserts the "right to good administration," which is a sort of protection clause against the union's own potentially Kafkaesque agencies, but the constitution's atmosphere is itself uncommonly Kafkaesque.
My freelance status -- as it had many years ago -- gave me a sort of protection from corporate culture I hadn't yet learned to realize or appreciate.
And just like how leaves fall down to the roots to nourish a tree, everything that Qiu does for Chun is a sort of protection.
Female patients show a much higher incidence of noncomplicated or calcified plaques, receiving de facto a sort of protection compared to male patients.
Nearly two months after becoming the first known person to survive an intentional plunge over Niagara Falls without any sort of protection, a Michigan man returned to plead guilty and said he planned to live out a more common, and less dangerous, fantasy -- running away to join the circus.
Not all women agree that being able to start the conversation keeps them safe from abusive comments; it often feels more like a gimmick, than any sort of protection.
It's a far more modest undertaking than that: more of a darkly comic exercise in the danger of self-fulfilling prophecies and the folly of thinking that being a hard-working A student will offer any sort of protection from the mad vagaries of fate.
Many other books include sex scenes without even a brief mention of any sort of protection or contraception.
If we are to believe Hobbes, then in the earliest years of humanity our leaders signed a contract with this Leviathan, binding our wills to it in exchange for security – a sort of primal protection racket.
