The scene where Odo assists Doctor Bashir in treating the wounded on the Promenade is a tip of the hat to a scene from the movie M*A*S*H (1970). Rene Auberjonois’s character, Father John Mulcahy, is asked to assist a military surgeon in the operating room and awkwardly complies.

http://memory-alpha.wikia.com/wiki/Emissary_(episode)

• Twenty-four minutes of footage was cut out of “Emissary”, scenes which David Carson hopes might be restored at some point. Carson commented: “When you shoot a lot of stuff and commit yourself to doing it, you do miss the bits and pieces that are inevitably lost when you have to get it down to time. I think there sections of the episode I would like to see back. When you try and bring it down to time, everybody loses something they like. In the end, you have to separate yourself from your own wishes and go with what’s good for the project. There are details of storytelling I liked having in there. I always liked the balance of the teaser at a slightly longer length with some more details of exactly how Sisko finds everybody during the Borg attack and where they all are. As far as television is concerned, the special effects people did such a wonderful job that its excitement was sustainable for longer”. (Captains’ Logs Supplemental - The Unauthorized Guide to the New Trek Voyages, pp 40-41)
• One of these deleted scenes featured Sisko meeting with Opaka again, to return the Orb. He tells her that fourteen planets have contacted the Federation to open trade links through Bajoran space. He tries to tell her he believes the Prophets to be wormhole aliens, but she tells him she does not wish to hear. She tells him “that is why a disbeliever was destined to seek them – one should never look into the eyes of his own gods…”. She also tells Sisko that his journey is only beginning. Rick Berman considers this to be “a wonderful scene” and one he regretted had to be removed for time: “I miss it all. There’s a wonderful scene where Sisko goes back down to Bajor to return the Orb to Kai Opaka that we took out. Cutting is horrible, especially when it’s something so close to you as the pilot was”. (Captains’ Logs Supplemental - The Unauthorized Guide to the New Trek Voyages, p 40)

(source: Memory Alpha)