Exxon Mobil Profit Up 56 Percent  NEW YORK (Reuters) - Exxon Mobil Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=XOM.N target=/stocks/quickinfo/fullquote"&gt;XOM.N&lt;/A&gt;, the world's  largest publicly traded oil company, on Thursday said quarterly  profit surged 56 percent, driven by soaring oil prices and  strong results from refining operations.