Michael Corvin: I want to stay with you.
Lucian: You're acting like a pack of rabid dogs. And that, gentlemen, simply will not do. Not if you expect to defeat the vampires on their own ground. Not if you expect to survive at all.
Selene: Whether you like it or not, you're in the middle of a war that has been raging for the better part of a thousand years. A blood feud between vampires and lycans. Werewolves.
Michael Corvin: Huh?
Selene: Consider yourself lucky. Most humans die within an hour after being bitten by a lycan or any immortal. The viruses we transmit are deadly.
Michael Corvin: So... if you bit me, what happens? I become a vampire instead?
Selene: No, you die.
Selene: How can you trust him over me?
Viktor: Because he's not the one who has been tainted by an animal.
Selene: It wasn't the Lycans. It was you. How could you bear my trust knowing that you killed my family?
Viktor: Yes, I have taken from you but I have given so much more. Is it not a fair trade for life I have granted you? The gift of immortality?
Selene: And the life of your daughter? Your own flesh and blood?
Viktor: I loved my daughter. But the abomination growing in her womb was a betrayal of me and the coven. I did what was necessary to protect the species. As I am forced to do yet again.
Viktor: Your incompetence is becoming most... taxing.
Michael Corvin: They'll kill you too for helping me.
Selene: I know.
Lucian: We were slaves once. The daylight guardians of the vampires. I was born into servitude. Yet I harbored them no ill will. Even took a vampire for my bride. It was forbidden, our union. Viktor feared a blending of the species. Feared it so much he killed her. His own daughter. Burnt alive for loving me. This is his war. Viktor's. And he spent the last 600 years exterminating my species.
Answer: Lucian does not die instantly after being shot by the silver nitrate bullet. This also is after he injects himself with Michael's blood. With that said there was a scene where Raze comes back with Amelia's blood (she is an elder). He checks on Lucian while dropping the bag of blood right mext to Lucian. I am absolutely certain he noticed this bag, injected himself with elder blood before he crawled out to stab craven in the leg. Lucian will be back and this was part of the story. When he comes back, they will show the audience in a flashback of Lucian injecting himself.