Sha'keir Duarte

Frank Ocean's cousin has a simple confession -- he did indeed go on the attack against Chris Brown and his entourage at a recording studio back in January ... but he did it to protect his flesh and blood. The cousin -- Sha'keir Duarte -- is embroiled in a lawsuit with Brown, with each suing the…

Chris Brown is responsible for more than $3 million dollars in pain and suffering ... according to legal docs filed by Frank Ocean's cousin over that massive brawl outside a recording studio. The docs were filed by Sha'Keir Duarte ... who claims one of Chris' goons put the hurtin' on him during…