अपनी गली में कुत्ता भी शेर हो जाता है |

Proverb (in Latin script): 
Apni Gali Me Kutta Bhi Sher Ho Jata Hai
Meaning: 
अपने समथॅकों के मध्य कायर भी बहादुर बन जाता है |
Meaning (in English): 
A coward becomes brave in company of his supporters.
Equivalent English Proverb: 

A cur is a lion in his own kennel.