"You're not asking me at all, Agent Coulson. You're telling me and my team to step aside to hand over our investigation to S.H.I.E.L.D.." "Try to think of it less as a handover and more as a handoff. You've done your part, now we'll do ours."
During a mission to locate Ian Quinn, Phil Coulson requested the help of Luca Russo, one of his contacts in Europe, to help his agents in an undercover mission to board a train that was crossing the Italian countryside carrying a package from Cybertek that Quinn recently purchased.
"Fine, have it your way. Just remember, your boss asked to be a part of this op. I warned him against it. So if you're looking for someone to blame, look to him."
Russo betrayed Coulson's Team and informed of their plan to Cybertek's security led by Carlo Mancini. When Melinda May fell from the train, Russo and his men captured and tortured her for information in a nearby barn. Phil Coulson, unknowing Russo's betrayal, contacted him. Russo went to the Bus with the intention of killing Coulson and Grant Ward. May's timely arrival prevented Russo's plans, as he was killed with a throwing knife in the back.