What's the safest way to treat cirrhosis of the liver?

No real treatment . mostly management of symptoms. sometimes things can regress with viral therapy or cessation of alcohol. antifibrotic treatments are in active research, as well. .
Physician. Cirrhosis is not directly tretaed. The underlying cause is identified and treated, when severe, consequences of cirrhosis are prevented and treated. Cirrhosis, which just means scarring of liver, can stabilize and become a minimal issue once the underlying medical problem is addressed.
? There is no "safe" way to treat cirrhosis. Shirt of a liver transplant, not much we can do to improve survival.
No good treatment. Stop alcohol or other offending agents and follow p with specialist.