Lanturn has two words for you, Malva: SURF. EVERYTHING. I know Lucario doesn't stand a chance, but Absol, Talonflame and Delphox can mop up if they need to. But will they...?
First up is a female Pyroar! I'm not worried about Noble Roar yet, but I wasn't prepared for a crit from Echoed Voice (now I wish I had kept Ion Deluge instead of dropping it for Ice Beam, I could've Volt Absorbed it for free HP). Lanturn eventually bites it but he did make you use up two Full Restores in the process. And, if I'm correct your lion has Rivalry instead of Unnerve, so maybe Lucario does stand a chance WHOA yes, that Flamethrower hurts but Mega Lucario survives it by about 10% and downs you with an Aura Sphere.
Next, a Talonflame? Okay, so let's pit your bird versus mine! Sure, you're two levels higher (and apparently faster) but you REALLY shouldn't be going all Flare Blitz and Brave Bird on my Rocky Helmet. My bird survives it with ONE HP (and possibly NOT by affection, either) and I Fly you for the KO. Talonflame levels up, too! (Sorry, girl, no Brave Bird for you, you need to keep Steel Wing and Roost.)
Third comes a Torkoal. Okay, let's try Roosting -- nope, no salvation against Stone Edge. Wow. Okay, Mega Lucario, let's see you dent this thing before you get melted. 80% damage! Not a KO, but it's close enough that Absol can easily mop up.
Last is a Chandelure! I don't know how you survived that Night Slash but, damn, your Flamethrower hit hard AND burned me. Absol's barely standing now. He somehow toughs out ANOTHER Flamethrower, turns it around for a win.