At least 170 of the 4,500 manuscripts in Egypt's Sacred Monastery of the God-Trodden Mount Sinai have text invisible to the naked eye.
The car's explosion killed seven, but the military said the death toll would have been above 50 had the tank not acted.
Footage reportedly shows two elderly men, believed to be Sufi Muslims, being led to their deaths in the Sinai desert.
The beaches of southern Sinai are popular with Israelis.
The Egyptian interior ministry said that the bomber was a 22-year-old Muslim Brotherhood supporter.
Sinai Province is believed to be behind the downing of Metrojet Flight 9268.
Sisi had previously denied that the crash that killed 224 people was caused by ISIS.
Security forces blocked a suicide bomber driving into a hotel, but his car exploded
The group pledged allegiance to ISIS in 2014 and claimed responsibility for the Russian plane crash.
Israeli police reported no causalities.
Libya appears to be Islamic State's most successful move yet beyond its Middle East heartland.