Kevinyu's Naruto 519 Prediction

Kankurou: It is over, Sasori-sama
Deidara: Shit! It has only began you fool
Sasori: Shut up... At last I can move my body freely
Deidara: ... Yeah, we're free, let's finish this
Sasori: No, not anymore, remember, we were just brought back here in this world, that we're not a part of anymore
Deidara:...
Kankurou: So you two, shall disappear forever
Deidara: Fuck! Weakling lucky Puppeteer
Sasori: Enough, Deidara. Kankurou, I would like to thank you and your troops for freeing us, at last I and Deidara can rest in peace forever, do the same with Akatsuki, the fallen members were all revived.
Kankurou: I will, Sasori-sama

Forlong's Naruto 519 Prediction

Konkuro: Kiri, tend the wounded. Ittan, send a message to the forward command that we're in position.
Deidara: You think you've won. Hmmm. It doesn't matter how much lightning you pump into me. I'll find a way out. I'll make you all works of art! ART IS A BLAST!
Ittan: Arg! Seal them now, Tango. I'm sick of his shrilling voice.
Omoi: Just give me a sec to make sure he won't be able to explode.

Naruto 518 Confirmed Spoiler

Fūjin Raijin (Thunder God and Wind God) hits Sasori and Deidara.
Kankurō: Black Secret Technique— Deidara and Sasori are taken inside of Kankurō's puppets (Black Ant and Crow
Deidara: Fu*k! This way, I'll have to use suicide bombing quickly! I believe showing the world my Ultimate Art so often is rather unsophisticated, but I guess I'm left no choice...hm
Deidara is about to open the mouth on his chest, when a Raiton starts flowing [through him].
Deidara: Raiton?!
Kankurō: Kiki Sanpatsu! (危々三発, Danger Triple Shot)

The Special One's Naruto 518 Prediction

-Contact!

(Omoi, with his blade drawn, aims to stop this treachery.)

Omoi: “I simply won’t allow such disgrace.”

(Kankuro, from behind yells to Omoi.)

Kankuro: “Don’t let the blood boil to your head, that’s when things always get sour.”

Silverblade's Naruto 518 Prediction

Chapter 518 - Battle Royale

Omoi: Here it comes!!!!

Deidara: Cocky one? mmmm

Sasori: What a fool.

Deidara opens his palms and fires a stream of clay wood peckers at Omoi and Kankuro.

NoName's Naruto 517 Prediction

Naruto 517: The Re-union.

-Madara’s Lair-

Madara: Then get to work. My left eye is hungry for battle.

Kabuto: Roger that.

Madara: Let’s see what this Hashirama imitation can give us. (As he picks Yamato up and activated his SG only to later let go of Yamato and covering his SG eye with his hand)

ShiverX's Naruto 517 Prediction

I think it will be some time until we see Naruto take battle, but once he does he will save a lot of people. He is definetly going to turn the tide. But before that we will see some major Fail from the Ninja world. All to estalish The strength of the enemy.
I also predict that Sasuke will kill Kabuto ( just like some ppl already predicted). But it will be to save Naruto.
"He's my opponent, or something like that." Again establishing him as the strong opponent.