The first time you see Cyrus is at Lake Verity
In Pokemon Platinum, you don't battle Cyrus at Spear Pillar. Instead, you fight him in the Distortion World. After beating him, Cynthia heals your Pokemon and then you battle Giratina.
Cyrus is only in Pokemon Diamond Pearl and Platinum. Nobody knows what happened to him after he disappeared in DPPl.
cyrus gives it to you
in the galactic warehouse
After releasing the three Pokemon of the lakes, Cyrus goes to the top of Mt. Coronet
GO to the spear pillar. go to youtube and write How to go to the Spear Pillar in Pokemon Platinum.
No. After you beat Cyrus for the third time, he leaves and never returns.
follow Cyrus to mt.corenet
You get a masterball after you beat Cyrus in the galactic HQ
Cyrus gives u one
you have to beat Cyrus in the distortion world
Ice and Fire