The liver is partly protected by the rib cage.

The entire upper (diaphragmatic) surface of the liver is covered by the diaphragm. Above the diaphragm, in the chest cavity (thorax), there is the right lung with the corresponding part of lung membrane (pleura) and the heart within the heart sac (pericardium).

The inferior (visceral) surface of the liver is in touch with the gallbladder, right kidney and adrenal gland, stomach, duodenum and “hepatic flexure”–the area where the right vertical (ascending) colon turns into the horizontal (transverse) colon

The back liver surface touches the esophagus and the inferior vena cava.

https://www.youtube.com/watch?time_continue=30&v=HFPsQPhDluQ