Bully cat

[Does anyone have suggestions that actually work to stop our 1 yr old Russian blue from bullying our 5 year old cat? It's getting to point where the 1yr old is going to find a new home soon!

Can you elaborate? How long have they been together? What kind of introductions have you done? How would you describe the bullying? How does the 5y/o react? Are they hiding? Eating? Using the box normally otherwise? 

Need more info to help.

Yes, they have been spayed. Together about 1 year. Use litter boxes appropriately. Molly hides under bed.