How does the Conor McGregor clan get down with the Lord?
Fire dancers, fireworks and bass-thumpin' live music ... in celebration of Conor Jr.'s baptism over the weekend.
It all went down at Luttrellstown Castle in Dublin ... where McGregor, family and friends took in some serious pyro at the christening after-party.
Conor Sr. was all smiles for his 5-month-old ... less than 2 months after his insane payday for boxing Floyd Mayweather.
If this is all for a baptism .