The phrase "fellow slaves" means people who are in the same situation of being enslaved, oppressed, or trapped in a difficult situation together. Full definition
Go through levels solving puzzles and saving fellow slaves. (levelsmack.com)
Beginning in 1858 somewhere in Texas, the film introduces us to Django (played by Jamie Foxx) while he's still un-unchained, trudging with a group of fellow slaves through the woods after being purchased at auction. (screenanarchy.com)
Sarah Paulson plays Epps» wife, with fellow slaves played by Beasts Of The Southern Wild's Dwight Henry and newcomer Lupita Nyongo. (empireonline.com)