Jan 10 (Reuters) - Morrisons
* CFO says saw some easing of deflation from Q3 to Xmas trading period
* CFO says priority is to be "very competitive"
* CFO says online contribution to Xmas period like-for-like growth was 0.6 percent
* CFO says deflation in 9 week Xmas period was 0.2 percent
* Shares open up 4 percent as Xmas sales beat forecasts, profit guidance raised
* Tesco shares up 4 percent, Sainsbury up 2.4 percent Further company coverage: (London Newsroom)