MIDEAST STOCKS-Markets rise but oil-driven rally losing steam

* Markets close well off intra-day highs * Dubai's DAMAC surges ahead of dividend vote * Potential U.S. interest rate hike delay also positive * DP World continues outperforming on Iran hopes * Egypt's Pioneers Holding surges further on strong Q2 By Olzhas Auyezov DUBAI, Aug 30 (Reuters) - Most Middle East stock markets rose but closed well off their intra-day highs on Sunday and some edged lower as investors started selling into the region's rally, indicating sentiment