This is the 13502nd most frequent Turkish word.
korumalarına
"To his/her/its protections" or "to his/her/its guards."
In this instance, 'korumalarına' is used to mean 'despite their guards', expressing contrast in the context of protection.
Korumalarına rağmen hırsız içeri girdi.
Despite their guards, the thief entered.
In this sentence, the word 'korumalarına' means 'to his guards' and is used as a possessive form and postposition to indicate whom the king trusts.
Kral, korumalarına güvenerek yürüdü.
The king walked, trusting his guards.
Here, 'korumalarına' implies 'to the act of protecting', expressing permission related to protection.