Jan 13 (Reuters) - Most stock markets in the Gulf ended higher on Thursday, with the Saudi index reaching its highest level since mid-2006, while the Egyptian bourse retreated due to a selloff in blue-chips. Saudi Arabia"s benchmark index (.TASI) advanced 1%, buoyed by a 5.4% rise in Riyad Bank (1010.SE) and a 1.5% increase in Saudi National Bank (1180.SE). The Saudi market was supported by the high price levels in oil markets, according to Farah Mourad, Senior Market Analyst of XTB MENA. "Additionally, the market could see strong support this year as the Saudi wealth fund is planning to invest $10 billion into local equities," Mourad said. Separately, the kingdom is planning to auction up to three mining licences in 2022, including Khnaiguiyah mines where zinc and copper deposits are estimated at around 26 million tonnes, the kingdom"s mining minister said on Wednesday. read more In Abu Dhabi, the index (.ADI) added 0.7%, led by a 1.8% gain in the country"s largest lender First Abu Dhabi Bank (FAB.AD). Dubai"s main share index (.DFMGI) firmed 0.2%, helped by a 1.1% rise in Emirates NBD Bank (ENBD.DU). Crude prices, a key catalyst for the Gulf"s financial markets, steadied near 2-month highs with Brent crude trading near $85 a barrel buoyed by expectations that a strong economic recovery will boost demand. However, a rise in U.S. inventories and high inflation capped gains. The Qatari index (.QSI) climbed 1.3%, as most of the stocks on the index were in positive territory including Qatar Islamic Bank (QISB.QA), which was up 2.7%. Qatar"s economy grew 2.6% year-on-year in the third quarter of 2021, according to official estimates, driven mainly by the non-hydrocarbon sector. read more Outside the Gulf, Egypt"s blue-chip index (.EGX30) fell 0.4%, hit by a 2.2% fall in investment bank EFG Hermes (HRHO.CA). The Egyptian stock market fell today after it recorded some important increases during the last few weeks as investors move to secure their gains. Overall, the market could see some price corrections but remains on positive footing, said Mourad. SAUDI ARABIA (.TASI) advanced 1% to 12,079 ABU DHABI (.FTFADGI) rose 0.7% to 8,426 DUBAI (.DFMGI) added 0.2% to 3,215 QATAR (.QSI) gained 1.3% to 12,218 EGYPT (.EGX30) lost 0.4% to 12,012 BAHRAIN (.BAX) was up 0.6% to 1,804 OMAN (.MSX30) rose 0.2% to 4,267 KUWAIT (.BKP) added 1.5% to 8,058