Since this ability isn't the same as Invulnerability, the user can only take so much damage before it finally takes an effect. At best, the user will only be stunned by damage that would usually kill ordinary people.
The One Being Sought can take a slash and being burned at the chest and did not even flinch.
Skin Bolic's solidified lightning skin can take tremendous amounts of damage.
Jasdevi can harden his body as he desires.
Skull protecting Enma (Katekyo Hitman Reborn!)
By using Busoshoku: Koka, Luffy can make parts of his body have durability that rivals or surpasses steel.
Due to his heritage as a Quincy with Shinigami/Hollow powers, Ichigo Kurosaki is immensely resilient to damage, and further training greatly increase this, along with his Tensa Zangetsu further boosting it.
Sado is unnaturally resistant to damage.
When Zangetsu fired a second Getsuga Tenshō at Ichigo, his inner Hollow, taking control, emerged from the destroyed wall with no visible damage.
In addition to his resilience, Yamamoto has shown remarkable durability.
When Love was brutally attacked by a Hollowfied Kensei, with a spiritually charged attack at point blank range, Love sustained only minor injuries and kept on fighting with no signs of faltering.
Daz Bones is tough to injure due to the Dice-Dice Fruit making his body hard as steel.
Diamond Jozu is tough as his moniker suggests, withstanding even the strongest slash in the world without trouble.
Matsuru can withstand more than two god-like powerful attacks of Thor and Hercules without losing consciousness
Kouga’s (Marchen Awakens Romance) magical power control is no better than that of a Bishop-class. However, he became a Knight because his unusual toughness makes him take very little damage from powerful attacks.
Larcade (Fairy Tail) is capable of stopping a full powered swing from Kagura with just two fingers.