Swords Dance, Return.
Scizor isnt fighting type so i dont think it would kill me in one or even two hits.
Also Lucario has pretty average defense and evn though its steel i still reckon Absol would in.
Good hypothetical battle on my behalf
I don't think you understand how Pokemon works, so I'll help you out with some examples.
Absol switches in against something that doesn't threaten it. End of Turn 1.
Absol uses Swords Dance, opponent switches to Scizor. End of Turn 2.
Next turn, Scizor uses Bullet Punch, which OHKOs Absol provided 1) Stealth Rock is in play (likely) and 2) Scizor is holding a Choice Band (also very likely). Without Stealth Rock, there is still a chance Absol will be OHKO'd (Damage is ~89-106%). Even if you manage to get an attack off, you would die to Life Orb Recoil if that is your held item. The only way you could damage Scizor before it kills you is with Sucker Punch, but Scizor resists it and will never be OHKO'd.
Absol switches in safely against something. End of Turn 1.
Absol uses Swords Dance, opponent switches to Lucario. End of Turn 2.
Lucario uses Close Combat, which obviously OHKOs Absol. Lucario has a 4x Resist to Sucker Punch, and Absol is always slower than Lucario when it is using a Swords Dance set. This one isn't even debatable.
Now, both of these scenarios assume that the user of Absol attempts to set up a Swords Dance, as you mentioned. A more proactive player might have tried to hit these counters on the switch by using an appropriate attacking move. This relies a lot on prediction, since when Absol comes out you are not likely to know what their counter is. In this case, using Superpower or Fire Blast (Although I'll admit the mixed set is more or less novelty or for UU battles) instead of Swords Dance may net you some good damage on their switch in. That said, Absol is not going to come out on top against Scizor or Lucario without either extremely good prediction, or a Choice Scarf.