The City Council tonight will commend Officer James Rose and five fellow police officers for their response to a fatal assault Feb. 25 by a Lynn man on his mother.Prosecutors said Cory Roche stabbed his mother, Lisa Bryson Roche, after she refused to prepare his income taxes. Rose rushed to 35 Fernwood Avenue off Broadway, confronted Roche, ordered him to drop the knife and, when Roche refused to do so, shot him once in the chest.Lisa Roche?s other children were in the apartment at the time of the stabbing.Roche pleaded not guilty from his hospital bed the following day to murdering his mother and armed assault with intent to murder Rose. He was ordered held in Boston?s Nashua Street jail after his release from Massachusetts General Hospital and is due back in court on March 28.In addition to giving Rose a certificate of commendation, councilors will also honor Officers Andrew Lauria, Kevin Colannino and Joseph Rizzuti and Lts. Jerimiah Goodwin and John Azzari “for their quick and heroic response.”Cory Roche has a court record that includes two charges of assault and battery with a dangerous weapon in 2004. He was arrested at the Swampscott train station in October 2005 on an outstanding arrest warrant related to the assault charges.Patrolman Michael Frayler spotted Roche pacing the commuter rail platform just after midnight on Oct. 27, questioned him and found a small amount of marijuana in Roche?s possession.Roche was placed on probation through March 2006 with conditions including a mental health evaluation stipulation that he not take drugs “with the exception of prescribed drugs.”Court records listed Roche as homeless at the time of his arrest while subsequent records listed an address in Charlestown and another at in Lynn.