Financials advanced 0.9%, ahead of earnings from Canada's major lenders with Bank of Nova Scotia BNS.TO and Bank of Montreal BMO.TO reporting results on Wednesday. By Fergal Smith TORONTO, May 24 (Reuters) - Canada's main stock index rose on Tuesday as resource and financial shares gained after investors returned from a long weekend, although losses in U.S. equities kept sentiment in check. In the United States, the S&P 500 .SPX and the Nasdaq .IXIC finished in the red as fears over whether attempts to curb decades-high inflation growth could tip the U.S. economy into recession dampened investor risk appetite.