"to be safe from" is a correct and commonly used phrase in written English.
It means to be protected or free from danger or harm. Example: She decided to move to a safer neighborhood to be safe from crime.
Manhattan's subterranean cables were supposed to be safe from harm.
"Statistically, they're going to be safe from predators.
I want us to be safe from them".
"I wanted it to be safe from cats, but in no way to spook the birds.
This means that very arid regions seem to be safe from hogs for the time being.
The Apple iPhone was thought to be safe from cyber attack.
Incumbents would have to be safe from challenge by new entrants.
Nothing seems to be safe from this hi-tech mission creep.
"The electoral documents cannot be considered to be safe from manipulations or alterations," said one of Fillon's supporters.
"We built our home to be safe from floods, and for three years we've been breathing this stuff".
Nowhere seems to be safe from people stripping down and curling up in the foetal position like supermarket-ready poultry.
