Verb
watch over so as to protect
Source: WordNetYou have to stand guard over the development and maintenance of democracy, social justice and the equality of manhood in your own native soil. Muhammad Ali Jinnah
We stand guard over works of art, but species representing the work of aeons are stolen from under our noses. Aldo Leopold
To fake it is to stand guard over emptiness. Arthur Herzog
We must stand sentinel to protect ourselves Source: Internet
The jewels over which they kept guard were stolen Source: Internet
A boat beaches in a lonely cove at night, the crew hurriedly unloading its cargo of tea to waiting men and pack horses while armed lookouts stand guard against a surprise swoop by the revenue men. Source: Internet