The X-Files, Season 5

Krycek:
You must be losing it, Mulder. I can beat you with one hand.

Mulder:
Isn't that how you like to beat yourself?

[Krycek cocks gun]

Mulder:
If those were my last words, I can do better.

Krycek:
I'm not here to kill you, Mulder. I'm here to help you.

Mulder:
(sarcastically) Hey, thanks.

Krycek:
You know, if it wasn't in my best interests, I would just as soon squeeze the trigger.

Mulder:
What's stopping you?

Krycek:
Hear this, agent Mulder. Listen very carefully, because what I'm telling you is deadly serious. There is a war raging, and unless you pull your head out of the sand, you and I and about 5 billion other people are gonna go the way of the dinosaur. I'm talking planned invasion- the colonization of this planet by an extraterrestrial race.

Mulder:
(laughing) I thought you were serious.

Krycek:
Kazakhstan, Skyland Mountain, the site in Pennsylvania, they're all alien lighthouses where the colonization wil be gin, but where now a battle is being raged, a struggle for heaven and earth where there is one law: fight or die. And one rule: resist or serve.

Mulder:
Serve who?

Krycek:
No, not who. What.

Mulder:
Krycek, you're a murderer, a liar and a coward. Just because you stick a gun in my chest, I'm supposed to believe you're my friend?!

Krycek:
(smiles) Get up. I was sent by a man... a man who knows, as I do, that resistance is in our grasp, and in yours. The mass incinerations were strikes by an alien rebellion, to upset plans for occupation. One of these rebels is being held captive. And if he dies, so does the resistance. [Leans forward and seems to kiss him on the cheek?, then puts his gun away and starts to leave.] (in Russian) Good luck to you, my friend.