Yes they can! However it is extremely unlikely for them to ever meet each other in the wild, as electric eels are freshwater fish and jellyfish are ocean… creatures. read more
In my area there are more than two dozen species each of anemones and jellyfish - of those, one anemone and three jellyfish are known to have a painful sting. While some people have reported the stings to feel like an electric shock, the true source of the pain is chemical in nature. read more