Lock Luke Charteris' big hit on fly-half David Skrela epitomised the visitors' battling qualities while Dusautoir's snatchat an attacking pass not intended for him summed up Toulouse's post-break problems.
Chelsea's efforts to somehow snatchat a lifeline suffered a setback with 20 minutes left when Ramires flew into a reckless tackle on Nani and left referee Oligario Benquerenca with no option other that to brandish a second yellow card.