This sheet will protect you from any sputum.
Protect yourself!
The police are here to protect and serve. When I got mugged there was no one there to protect me.
You must protect yourself! This bandanna will protect my neck from sunburn.
The knight use he's shield to protect his self.
We must protect this petroglyph. That petroglyph is an obvious fake.
Infinitive
When you are planning to have sex, using a contraceptive will prevent pregnancy but will not usually protect against sexually transmitted diseases.
The word viciously is an adverb, yes.An example sentence using the word is: "the lion viciously killed the hunter in order to protect the cubs".
Using petroleum in a sentence?
I had to protect the diamond earrings at all costs.
this is a sentence using aquit
I am not writing a sentence using that word.
we think that since it is not clear what "them" is...that it is a sentence fragment.