The phrase "and guarding that" is correct and usable in written English.
It can be used in contexts where you are referring to the act of protecting or maintaining something, often following a statement about what is being guarded.
Example: "The team is focused on achieving their goals and guarding that progress against any setbacks."
Alternatives: "and protecting that" or "and safeguarding that".
"Fossil fuel is the No. 1 thing we import to Afghanistan," Mr. Mabus said, "and guarding that fuel is keeping the troops from doing what they were sent there to do, to fight or engage local people".
You do that by maintaining quiet, focused time for yourself in which to reflect, recharge and let your mind wander -- and guarding that precious time like it's your job.
It is during damselfly oviposition and mate guarding that fully engorged mites drop off their hosts (leaving a scar on the damselfly which can become obscured with age).
There was a Byzantine and Christian Arab garrison guarding that fair, however the size of the garrison was miscalculated by the Muslim informants.
And there's something about Delilah's irresistible man-trapping allure, as she seduces her psychiatrists and guards, that's troublingly yesterdecade.
This, of course, would be ludicrous – as it is his safes and guards that provide the incentive not to rob his vaults.
Just look at the slow-simmering rage between the inmates and guards that led to a justified riot in the finale.
The ring involved sex between inmates and guards that led to four of the officers becoming pregnant, one of them twice, by Tavon White, leader of a gang called the Black Guerrilla Family, according to an indictment.
We have nearly a million police and guards that deal almost exclusively with blue collar criminals.
I was a security guard for a while, supposed to guard that place, and I robbed the owner about thirty times.
Mr. Gardner jealously guards that tradition, and had hinted that he would even consider moving the primary into December to avoid being upstaged.
