Oliver tells Maseo that he won't be accepting Ra's al Ghul's offer in episode 3x16 "The Offer".
From episode 1x09 "Year's End".
Oliver talks on the phone while walking in the rain in episode 1x16 "Dead to Rights".
Thea, Laurel, and Diggle take cover as the goons with a machine gun shoot at them while emptying the truck in episode 4x01 "Green Arrow".
Lance meets with Damien Darhk so Diggle can follow him when he leaves in episode 4x06 "Lost Souls".