Tidus follows Yuna and Kimahri to look for Auron before the opening game.
Outside the locker room he comes across two Al Bhed,
probably Blappa and Berrik.

Y myto summoner.

Fa sicd nabund.

Hey!
Al Bhed Psyches, right?
Some Al Bhed saved me the other day, and...
This girl Rikku gave me food and...
Uh... You don't understand me, do you?
Uh, anyway...
If you meet Rikku, tell her thanks for me.
Oh, and as for the first game? May the best team win!

After discovering that Yuna is missing, kidnapped by the Al Bhed,
Tidus goes with Lulu and Kimahri to rescue her.
After the battle on the Al Bhed ship, Yuna emerges from within,
the Al Bhed guarding her slumping to the ground.
Tidus stays distant as Lulu walks to Yuna.

I hope you hurt them.

A little.
Tidus examines the ship, walking towards the unconscious Al Bhed.
What is it?

There were these Al Bhed that saved my life when I first came to Spira.
They took me on their ship, even gave me food.
I was kinda hoping this was the same ship. But it's not.
I wonder if they're all gone.

What happened?

Sin came up near us.
I made it out okay, but I don't know what happened to their ship.

Um, was there anyone called Cid on that ship?

I don't know. They were all speaking that Al Bhed language.

I see...

So who's Cid?

He's my uncle, but I've never actually met him.

Mmhmm.
Wait.
So that means you're Al Bhed, too, Yuna?

On my mother's side, yes.
Cid is my mother's brother.
He became distant after my mother married.
But she told me to seek him out if I ever needed help.

You're worried he was...?

Don't tell Wakka about Yuna's lineage.
The thing about Wakka--he never had much love for the Al Bhed.

Whoa!
I gotta tell Wakka!

I thought I told you not to tell Wakka!

The game!

Oh!
She shoots a fire spell into the sky as a signal to Wakka.