Is this sentence "encircle the comma using slash" right? Actually, I want to figure out this situation \,\ I doubt the word 'encircle' is not accurate.
"Enclose the comma with two back slashes."
Another alternative word is "pad":
"Pad the comma with one back slash in front and one behind."
Or "delimit" if the purpose is to separate some text. But I doubt it is the case here.